Development.lyx: s/splash.lyx/Welcome.lyx/g

[lyx.git] / lib / doc / Math.lyx

#LyX 2.3 created this file. For more info see http://www.lyx.org/
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\pdf_title "LyX's Math Manual"
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\begin_body

\begin_layout Title
\SpecialChar LyX
's detailed Math manual
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\begin_layout Author
by the \SpecialChar LyX
 Team
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\noindent
If you have comments or error corrections, please send them to the \SpecialChar LyX
 Documentatio
n mailing list: 
\family typewriter

\begin_inset CommandInset href
LatexCommand href
name "lyx-docs@lists.lyx.org"
target "lyx-docs@lists.lyx.org?subject=LyX's Math manual"
type "mailto:"
literal "false"

\end_inset


\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout
author: Uwe Stöhr
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\begin_inset Newline newline
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\family sans
Version 2.3.x
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LatexCommand tableofcontents

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\begin_layout Standard
\begin_inset Note Note
status open

\begin_layout Plain Layout
To export this document to PDF, PS or DVI the \SpecialChar LaTeX
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\series bold
braket, cancel, eurosym, mathdots, mathtools, mhchem, undertilde
\series default
 and 
\series bold
was
\series default
 should be installed.
 If they are not installed the document can be exported anyway but the sections
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 An exception is 
\series bold
mhchem
\series default
; if it is not installed, this file cannot be exported.
\end_layout

\begin_layout Plain Layout
The latest PDF-version of this document can be found here:
\begin_inset Newline newline
\end_inset


\series bold
https://wiki.lyx.org/LyX/Manuals#Math
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Section
Introduction
\end_layout

\begin_layout Standard
This document explains \SpecialChar LyX
's math features and is furthermore a collection
 of \SpecialChar LaTeX
-commands used for mathematical characters and constructs.
 The explanations are designed for the usage of commands.
 It is therefore required that you have read the section 
\family typewriter
Mathematical
\begin_inset space ~
\end_inset

Formulas
\family default
 of the User's Guide.
\end_layout

\begin_layout Standard
Most of the characters and many constructs explained in this manual are
 also accessible via the menu 
\family sans
Insert
\series bold
\SpecialChar menuseparator

\series default
Math
\family default
 or the 
\family sans
math
\family default
\series bold
 
\family sans
\series default
toolbar
\family default
.
 But everybody who has to write lots of formulas will notice that it is
 much faster to use commands instead of the math toolbar.
 Therefore this manual is focused on commands but also mentions the correspondin
g toolbar buttons when available.
\end_layout

\begin_layout Standard
If not specially mentioned the commands are only available within formulas.
 To be able to use all commands explained in this document, the option 
\family sans
Use AMS math package
\family default
 must be checked in the document settings (menu 
\family sans
Document\SpecialChar menuseparator
Settings\SpecialChar menuseparator
Math
\begin_inset space ~
\end_inset

Options
\family default
).
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
The option 
\family sans
Use AMS math package automatically
\family default
 only uses 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
AmS 
\end_layout

\end_inset

-math when math constructs are found that are supported by \SpecialChar LyX
.
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\begin_layout Standard
This document doesn't list all 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
AmS 
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-math commands
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status collapsed

\begin_layout Plain Layout
A list with all 
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status collapsed

\begin_layout Plain Layout


\backslash
AmS
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-math commands is in the file 
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name "amsguide.pdf"
target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
literal "false"

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\family default
, which is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset

 for lucidity reasons.
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\begin_layout Section
General Instructions
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\begin_layout Standard
To create an inline formula
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! inline
\end_layout

\end_inset

 that is embedded into a text line, use one of the shortcuts 
\begin_inset Info
type  "shortcuts"
arg   "math-mode"
\end_inset

 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-mode"
\end_inset

.
\begin_inset Newline newline
\end_inset

To create a display style formula
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! display style
\end_layout

\end_inset

 which will appear bigger, has a different format, and will be in a separate
 paragraph, use one of these shortcuts: 
\begin_inset Info
type  "shortcuts"
arg   "math-display"
\end_inset

.
\end_layout

\begin_layout Standard
To change a display style formula to an inline formula, set the cursor into
 the formula and use one of the shortcuts 
\begin_inset Info
type  "shortcuts"
arg   "math-mode"
\end_inset

 or the menu 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Change formula type
\family default
.
 The same way is used to change an inline formula to a display style formula.
\end_layout

\begin_layout Standard
To display parts of an inline formula in the size of a display style formula,
 enter the command 
\series bold

\backslash
displaystyle
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
displaystyle
\end_layout

\end_inset

 to a formula.
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\begin_layout Standard
Only inline formulas are allowed inside tables.
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\begin_layout Standard
The 
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math toolbar
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\family sans
View\SpecialChar menuseparator
Toolbars
\family default
.
 When you click there on 
\begin_inset Quotes eld
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Math
\begin_inset Quotes erd
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 the toolbar will be shown permanently at the bottom; this state is visualized
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\family sans
Toolbars
\family default
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 When you click in this state again on 
\begin_inset Quotes eld
\end_inset

Math
\begin_inset Quotes erd
\end_inset

 in the 
\family sans
Toolbars
\family default
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\family sans
math toolbar
\family default
 is only shown when the cursor is within a formula; this state is visualized
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\begin_inset Quotes eld
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Math
\begin_inset Quotes erd
\end_inset

 to 
\begin_inset Quotes eld
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Math
\begin_inset space ~
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(auto)
\begin_inset Quotes erd
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.
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The \SpecialChar TeX
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 is invoked by pressing the toolbar button 
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\family sans
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TeX Code
\family default
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\begin_inset Info
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\begin_layout Standard
To change the \SpecialChar LaTeX
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\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
L@\SpecialChar LaTeX
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\end_inset

, use the menu 
\family sans
Document\SpecialChar menuseparator
Settings\SpecialChar menuseparator
LaTeX
\family default
 
\family sans
Preamble
\family default
.
\end_layout

\begin_layout Standard
To edit matrices, case differentiations and multiline formulas subsequently,
 use the menus 
\family sans
Edit\SpecialChar menuseparator
Math
\family default
 and 
\family sans
Edit\SpecialChar menuseparator
Rows
\begin_inset space \thinspace{}
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&
\begin_inset space \thinspace{}
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Columns,
\family default
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\family sans
table toolbar
\family default
.
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 column to the left or the line above.
\end_layout

\begin_layout Standard
To write text in formulas
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
For multiline formulas the command 
\series bold

\backslash
intertext
\series default
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\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Text-in-multiline"

\end_inset

.
\end_layout

\end_inset

 
\emph on
mathematical text
\emph default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Text ! in formulas
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Mathematical text
\end_layout

\end_inset

 is used.
 This mode is invoked with the shortcut 
\begin_inset Info
type  "shortcut"
arg   "font-default"
\end_inset

 or by the insertion of the command 
\series bold

\backslash
text
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
text
\end_layout

\end_inset

.
 The text appears black in \SpecialChar LyX
 and can therefore be distinguished from the
 other formula parts which appear blue.
 In the output mathematical text is set upright, in contrary to other formula
 parts.
\end_layout

\begin_layout Subsection*
Command Scheme
\end_layout

\begin_layout Standard
Most of the \SpecialChar LaTeX
-commands for math constructs have the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
commandname[optional
\series default
 
\series bold
argument]{required
\series default
 
\series bold
argument}
\end_layout

\begin_layout Standard
A command always starts with a backslash 
\begin_inset Quotes gld
\end_inset


\series bold

\backslash

\series default

\begin_inset Quotes grd
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.
 To omit optional arguments, also omit the associated brackets.
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 \SpecialChar TeX
 braces
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
T@\SpecialChar TeX
-braces
\end_layout

\end_inset

.
 If you add in a formula a left brace to a command name, \SpecialChar LyX
 automatically
 creates a \SpecialChar TeX
 brace.
 In all other cases \SpecialChar TeX
 braces are created in formulas with the command 
\series bold

\backslash
{
\series default
.
 \SpecialChar TeX
 braces appear red in \SpecialChar LyX
, in contrary to normal braces which appear blue.
 In \SpecialChar TeX
 mode no command is needed to get \SpecialChar TeX
 braces.
 \SpecialChar TeX
 braces don't appear in the output.
\end_layout

\begin_layout Standard
When commands without arguments, like commands for symbols are entered in
 \SpecialChar TeX
 mode, a space character must 
\emph on
always
\emph default
 be behind the command to end it.
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 When the space should appear in the output, the space must be followed
 by a protected space in normal text.
\end_layout

\begin_layout Standard
A protected space is inserted with 
\begin_inset Info
type  "shortcuts"
arg   "command-alternatives space-insert protected ; math-space"
\end_inset

.
\end_layout

\begin_layout Subsection*
\begin_inset Newpage newpage
\end_inset

Syntax Explanation
\end_layout

\begin_layout Itemize
The symbol 
\begin_inset space \textvisiblespace{}
\end_inset

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\end_layout

\begin_layout Itemize
An arrow like 
\begin_inset Formula $\to$
\end_inset

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\family sans
Tab
\family default
 key can often be used instead of 
\begin_inset Formula $\to$
\end_inset

 and 
\begin_inset Formula $\downarrow$
\end_inset

, and 
\family sans
Shift+Tab
\family default
 instead of 
\begin_inset Formula $\leftarrow$
\end_inset

 and 
\begin_inset Formula $\uparrow$
\end_inset

.
\end_layout

\begin_layout Subsection*
Available units
\end_layout

\begin_layout Standard
\align center
\begin_inset Float table
placement H
wide false
sideways false
status open

\begin_layout Plain Layout
\align center
\begin_inset Caption Standard

\begin_layout Plain Layout
\begin_inset CommandInset label
LatexCommand label
name "tab:Available-units"

\end_inset

Available units
\end_layout

\end_inset


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\begin_layout Plain Layout
Cicero (1
\begin_inset space \thinspace{}
\end_inset

cc = 12
\begin_inset space \thinspace{}
\end_inset

dd)
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
ex
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Height of letter 
\emph on

\begin_inset Quotes eld
\end_inset

x
\emph default

\begin_inset Quotes erd
\end_inset

 in the current font
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
em
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
width of letter 
\begin_inset Quotes eld
\end_inset


\emph on
M
\emph default

\begin_inset Quotes erd
\end_inset

 in the current font
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
mu
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
math unit (1
\begin_inset space \thinspace{}
\end_inset

mu = 
\begin_inset Formula $\nicefrac{1}{18}$
\end_inset


\begin_inset space \thinspace{}
\end_inset

em)
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Section
Basic Functions
\end_layout

\begin_layout Subsection
Exponents
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Exponents
\end_layout

\end_inset

 and Indices
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Indices
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Superscripts|see
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

{
\end_layout

\end_inset

Exponents
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Subscripts|see
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

{
\end_layout

\end_inset

Indices
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
Indices are created with an underscore 
\begin_inset Quotes eld
\end_inset

_
\begin_inset Quotes erd
\end_inset

 or via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-subscript"
\end_inset

, exponents with a caret 
\begin_inset Quotes eld
\end_inset

^
\begin_inset Quotes erd
\end_inset

 or via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-superscript"
\end_inset

.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
B_V
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $B_{V}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
B^V
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $B^{V}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
B^
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $B^{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
As the caret is in some languages an accent, vowels will be accentuated
 in this case and not set as exponents
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Depending on the used keyboard settings this can also happen for characters
 other than vowels.
\end_layout

\end_inset

.
 To get exponents in this case, press 
\family sans
Space
\family default
 after the caret as in the last example.
\end_layout

\begin_layout Subsection
Fractions
\begin_inset CommandInset label
LatexCommand label
name "subsec:Fractions"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Fractions
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Fractions are generated with the command 
\series bold

\backslash
frac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! F ! 
\backslash
frac
\end_layout

\end_inset

 or via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\frac"
\end_inset

.
 The font size is adjusted automatically, depending on whether the fraction
 is in an inline or display style formula.
 With the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\frac-square"
\end_inset

 you can select different fraction types.
\end_layout

\begin_layout Standard
With the command 
\series bold

\backslash
dfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dfrac
\end_layout

\end_inset

 a fraction can be created that always has the size of a display style formula.
 With 
\series bold

\backslash
tfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
tfrac
\end_layout

\end_inset

 the fraction appears always with the size of an inline formula.
 An example:
\end_layout

\begin_layout Standard
A line with the fraction 
\begin_inset Formula $\frac{1}{2}$
\end_inset

 that was created with the command 
\series bold

\backslash
frac
\series default
.
\end_layout

\begin_layout Standard
A line with the fraction 
\begin_inset Formula $\dfrac{1}{2}$
\end_inset

 that was created with the command 
\series bold

\backslash
dfrac
\series default
.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\frac{A}{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dfrac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dfrac{A}{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dfrac
\begin_inset space \textvisiblespace{}
\end_inset

e^
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

1
\begin_inset Formula $\downarrow$
\end_inset

2
\begin_inset Formula $\downarrow\downarrow$
\end_inset

3
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dfrac{e^{\frac{1}{2}}}{3}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\begin_inset Newpage newpage
\end_inset

For nested fractions the command 
\series bold

\backslash
cfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
cfrac
\end_layout

\end_inset

 can be used.
 Here is an example:
\begin_inset VSpace -3mm
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Formula 
\begin{align*}
\textrm{created with \textbf{\textbackslash frac}} &  & \textrm{created with \textbf{\textbackslash cfrac}}\\
\frac{A}{B+\frac{C+\frac{E}{F}}{D}} &  & \cfrac{A}{B+\cfrac{C+\cfrac{E}{F}}{D}}
\end{align*}

\end_inset


\end_layout

\begin_layout Standard
The command for the example above is:
\end_layout

\begin_layout Standard

\series bold

\backslash
cfrac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B+
\backslash
cfrac
\begin_inset space \textvisiblespace{}
\end_inset

C+
\backslash
cfrac
\begin_inset space \textvisiblespace{}
\end_inset

E
\begin_inset Formula $\downarrow$
\end_inset

F
\begin_inset Formula $\downarrow$
\end_inset

D
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
cfrac
\series default
 sets the fraction always in the size of a displayed formula, also when
 it is part of another fraction.
\end_layout

\begin_layout Standard
It is possible to specify the alignment of the numerator.
 The command 
\series bold

\backslash
cfracleft
\series default
 is used to left align it, the command 
\series bold

\backslash
cfracright
\series default
 to right-align it.
 
\series bold

\backslash
cfrac
\series default
 centers the numerator.
 These fractions demonstrate the different alignments:
\end_layout

\begin_layout Standard

\series bold
\begin_inset Formula 
\[
\cfrac[l]{A}{B+C}\,,\,\cfrac{A}{B+C}\,,\,\cfrac[r]{A}{B+C}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 
\series bold

\backslash
cfracleft
\series default
 and 
\series bold

\backslash
cfracright
\series default
 are no real \SpecialChar LaTeX
 commands but represent the command 
\series bold

\backslash
cfrac[alignment]{numerator}{denominator}
\series default
 .
 Therefore you cannot use them in \SpecialChar TeX
 code.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

It is often advantageous to combine 
\series bold

\backslash
cfrac
\series default
 and 
\series bold

\backslash
frac
\series default
:
\begin_inset Formula 
\[
\cfrac{A}{B+\cfrac{C+\frac{E}{F}}{D}}
\]

\end_inset


\end_layout

\begin_layout Standard
For inline fractions with a sloped fraction stroke you can use the command
 
\series bold

\backslash
nicefrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! N ! 
\backslash
nicefrac
\end_layout

\end_inset

: 
\begin_inset Formula $\nicefrac{5}{31}$
\end_inset

 or 
\series bold

\backslash
unitfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
unitfrac
\end_layout

\end_inset

: 
\begin_inset Formula $\unitfrac{5}{31}$
\end_inset

 There is furthermore the command 
\series bold

\backslash
unitfracthree
\series default
 that offers to write a fraction in combination with a number: 
\begin_inset Formula $\unitfrac[2]{1}{3}$
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 
\series bold

\backslash
unitfracthree
\series default
 is not a real \SpecialChar LaTeX
 command but the command
\begin_inset Newline newline
\end_inset


\series bold

\backslash
unitfrac[number]{numerator}{denominator}
\series default
 .
 Therefore you cannot use it in \SpecialChar TeX
 code.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
How to define own fractions where the fraction stroke can be changed, is
 explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Self-defined-Fractions"

\end_inset

.
\end_layout

\begin_layout Standard
Multiline fractions are explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Multiline-Fractions"

\end_inset

.
\end_layout

\begin_layout Subsection
Roots
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Roots
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Square roots are created with 
\series bold

\backslash
sqrt
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
sqrt
\end_layout

\end_inset

 or the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\sqrt"
\end_inset

, all other roots with the command 
\series bold

\backslash
root
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
root
\end_layout

\end_inset

 or with the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\root"
\end_inset

.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sqrt
\begin_inset space \textvisiblespace{}
\end_inset

A-B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqrt{A-B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
root
\begin_inset space \textvisiblespace{}
\end_inset

3
\begin_inset Formula $\downarrow$
\end_inset

A-B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqrt[3]{A-B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
A square root can also be created with 
\series bold

\backslash
root
\series default
 when the root index field is left empty.
\end_layout

\begin_layout Standard
With certain indices the distance to the root is too small, like in this
 formula: 
\begin_inset Formula $\sqrt[\beta]{B}$
\end_inset


\begin_inset Newline newline
\end_inset

The 
\begin_inset Formula $\beta$
\end_inset

 touches the root.
 To avoid this, the commands 
\series bold

\backslash
leftroot
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
leftroot
\end_layout

\end_inset

 and 
\series bold

\backslash
uproot
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
uproot
\end_layout

\end_inset

 are used with the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
leftroot{distance}
\series default
 and 
\series bold

\backslash
uproot{distance}
\end_layout

\begin_layout Standard
Distance is the number of Big Points (unit bp; 
\begin_inset Formula $\mathrm{72\,bp=1\,inch}$
\end_inset

), that the index should be moved to the left or top, resp..
 The commands are written to the index.
 This way the command
\begin_inset Newline newline
\end_inset


\series bold

\backslash
root
\backslash
leftroot{-1
\begin_inset Formula $\to$
\end_inset


\backslash
uproot{2
\begin_inset Formula $\to$
\end_inset


\backslash
beta
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset Formula $\to$
\end_inset

B
\begin_inset Newline newline
\end_inset


\series default
produces a correct typeset formula: 
\begin_inset Formula $\sqrt[\leftroot{-1}\uproot{2}\beta]{B}$
\end_inset


\end_layout

\begin_layout Subsection
Binomial Coefficients
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Binomial coefficients
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Binomial coefficients are inserted with the command 
\series bold

\backslash
binom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
binom
\end_layout

\end_inset

 or with the submenu of the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\frac-square"
\end_inset

.
 As with fractions (
\series bold

\backslash
frac
\series default
) in addition to 
\series bold

\backslash
binom
\series default
 there are the commands 
\series bold

\backslash
dbinom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dbinom
\end_layout

\end_inset

 and 
\series bold

\backslash
tbinom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
tbinom
\end_layout

\end_inset

.
 For other brackets around binomial coeficients there are the commands 
\series bold

\backslash
brace
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
brace
\end_layout

\end_inset

 and 
\series bold

\backslash
brack
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
brack
\end_layout

\end_inset

.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
binom
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\binom{A}{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dbinom
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dbinom{A}{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
tbinom
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\tbinom{A}{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" topline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
brack
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${A \brack B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
brace
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${A \brace B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Case Differentiations
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Case differentiations 
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cases
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\to$
\end_inset

B>0
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
cases
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{cases}
A & B>0\end{cases}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cases
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{cases}
A & \textrm{for }x>0\\
B & \textrm{for }x=0
\end{cases}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
After inserting 
\series bold

\backslash
cases
\series default
 or pressing the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\cases"
\end_inset

 you can create new lines with the shortcut 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

 or the table toolbar button 
\begin_inset Info
type  "icon"
arg   "tabular-feature append-row"
\end_inset

.
\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
cases
\series default
 is also available via the menu 
\family sans
Insert\SpecialChar menuseparator
Math\SpecialChar menuseparator
Cases-Environment
\family default
.
\end_layout

\begin_layout Subsection
Negations
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Negations
\end_layout

\end_inset


\end_layout

\begin_layout Standard
By inserting 
\series bold

\backslash
not
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! N ! 
\backslash
not
\end_layout

\end_inset

 every character can be displayed canceled.
 The characters are quasi accentuated by a slash.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
not=
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\not=$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
not 
\backslash
le
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\not\le$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
not 
\backslash
parallel
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\not\parallel$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The last example shows that not all negations look good.
 Therefore there are special commands for some negations (see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Mathematical-Symbols"

\end_inset

 and 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Relations"

\end_inset

).
\end_layout

\begin_layout Subsection
Placeholders
\begin_inset CommandInset label
LatexCommand label
name "subsec:Placeholders"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Placeholders
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Chemical characters ! Isotopes
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Isotopes|see
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

{
\end_layout

\end_inset

Chemical characters
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
When displaying e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

isotopes
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Typesetting isotopes and chemical symbols is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Chemical-Symbols-and"

\end_inset

.
\end_layout

\end_inset

 the following problem occurs:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Indices created with sub- and superscripts:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $_{9}^{19}\mathrm{F}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
correct indices:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $_{\phantom{1}9}^{19}\mathrm{F}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The shorter index is by default placed below or above the first character
 of the longer index.
 To avoid this there is the command 
\series bold

\backslash
phantom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! P ! 
\backslash
phantom
\end_layout

\end_inset

 or the math toolbar button
\begin_inset space \thinspace{}
\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
can be found in the submenu of the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\space"
\end_inset


\end_layout

\end_inset

 
\begin_inset Info
type  "icon"
arg   "math/phantom"
\end_inset

 that creates one or more phantom characters.
 When inserting 
\series bold

\backslash
phantom
\series default
 a small blue box appears that is superposed with two red arrows.
 The arrows indicate that the complete width and height of the box content
 will be created as placeholder.
 Phantom characters are accordingly placeholders with the size of the characters.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
^19
\begin_inset space \textvisiblespace{}
\end_inset

_
\backslash
phantom
\begin_inset space \textvisiblespace{}
\end_inset

1
\begin_inset Formula $\to$
\end_inset

9
\begin_inset space \textvisiblespace{}
\end_inset

F
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $_{\phantom{1}9}^{19}\mathrm{F}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
^235
\begin_inset space \textvisiblespace{}
\end_inset

_
\backslash
phantom
\begin_inset space \textvisiblespace{}
\end_inset

23
\begin_inset Formula $\to$
\end_inset

9
\begin_inset space \textvisiblespace{}
\end_inset

F
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $_{\phantom{23}9}^{235}\mathrm{F}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Lambda^
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
phantom
\begin_inset space \textvisiblespace{}
\end_inset

ii
\begin_inset Formula $\to$
\end_inset

t
\begin_inset space \textvisiblespace{}
\end_inset

_MMt
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Lambda_{MMt}^{\phantom{ii}t}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
Furthermore there are the commands 
\series bold

\backslash
vphantom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! V ! 
\backslash
vphantom
\end_layout

\end_inset

 (toolbar button 
\begin_inset Info
type  "icon"
arg   "math/vphantom"
\end_inset

) and 
\series bold

\backslash
hphantom
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hphantom
\end_layout

\end_inset

 (toolbar button 
\begin_inset Info
type  "icon"
arg   "math/hphantom"
\end_inset

).
 
\series bold

\backslash
hphantom
\series default
 creates only space for the maximal height of the characters in the box
 but not for its width.
 
\series bold

\backslash
vphantom
\series default
 creates only space for the width of the box content.
 Therefore  the boxes of both commands have only one red arrow.
\end_layout

\begin_layout Standard
For example the command 
\series bold

\backslash
vphantom
\begin_inset space \textvisiblespace{}
\end_inset

a
\backslash
int
\series default
 creates space for the height of the integral sign,
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
The command 
\series bold

\backslash
int
\series default
 creates an integral sign, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Big-Operators"

\end_inset

.
\end_layout

\end_inset

 because this is the larger character.
 An example application is in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Multiline-Brackets"

\end_inset

.
\end_layout

\begin_layout Standard
Placeholders can also be used for text when they are inserted via the menu
 
\family sans
Insert\SpecialChar menuseparator
Formatting\SpecialChar menuseparator
Phantom
\family default
:
\end_layout

\begin_layout Standard
This is a sentence.
\begin_inset Newline newline
\end_inset


\begin_inset Phantom Phantom
status open

\begin_layout Plain Layout
This
\end_layout

\end_inset

 is a sentence.
\end_layout

\begin_layout Subsection
Lines
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Lines
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! underlined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overline
\begin_inset space \textvisiblespace{}
\end_inset

A+B
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
overline
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overline{A+B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
underline
\begin_inset space \textvisiblespace{}
\end_inset

A+B
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
underline
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underline{A+B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm" bottomspace="1mm">
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overline
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
underline
\begin_inset space \textvisiblespace{}
\end_inset

A+B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overline{\underline{A+B}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
In the last example it doesn't matter if first 
\series bold

\backslash
overline
\series default
 or 
\series bold

\backslash
underline
\series default
 is inserted.
\end_layout

\begin_layout Standard
To double underline use 
\series bold

\backslash
underline
\series default
 twice.
\end_layout

\begin_layout Standard
It is possible to place up to 6 lines above or below characters.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Custom lines can be created using the command 
\series bold

\backslash
rule
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
rule
\end_layout

\end_inset

 which has the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
rule[vertical offset]{length}{thickness}
\end_layout

\begin_layout Standard
The optional vertical offset shifts the line upwards (or downwards, when
 the value is negative).
 The units listed in 
\begin_inset CommandInset ref
LatexCommand ref
reference "tab:Available-units"

\end_inset

 can be used for the values.
 Here are two example lines created with the commands
\begin_inset Newline newline
\end_inset


\series bold

\backslash
rule[-2ex]{3cm}{2pt}
\series default
 and 
\series bold

\backslash
rule{2cm}{1pt}
\series default
:
\end_layout

\begin_layout Standard
This is a sentence 
\begin_inset Formula $\rule[-2ex]{3cm}{2pt}\rule{2cm}{1pt}$
\end_inset

 with two lines.
\end_layout

\begin_layout Standard

\series bold

\backslash
rule
\series default
 can also be used for text when a line is inserted via the menu 
\family sans
Insert\SpecialChar menuseparator
Formatting\SpecialChar menuseparator
Horizontal
\begin_inset space ~
\end_inset

Line
\family default
:
\end_layout

\begin_layout Standard
This is a sentence 
\begin_inset CommandInset line
LatexCommand rule
offset "0.5ex"
width "3cm"
height "1pt"

\end_inset

 with one line.
\end_layout

\begin_layout Subsection
Ellipses
\begin_inset CommandInset label
LatexCommand label
name "subsec:Ellipses"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Ellipses
\end_layout

\end_inset


\end_layout

\begin_layout Standard
There are different types of ellipses available.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
In the math toolbar in the submenu of the button 
\begin_inset Info
type  "icon"
arg   "math-insert \\ldots"
\end_inset


\end_layout

\end_inset

 For listings dots at the baseline are used (
\series bold

\backslash
ldots
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
ldots
\end_layout

\end_inset

), while for operations dots are needed that are on the same height as the
 operators (
\series bold

\backslash
cdots
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
cdots
\end_layout

\end_inset

).
 When using the command 
\series bold

\backslash
dots
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dots
\end_layout

\end_inset

, \SpecialChar LaTeX
 decides on the basis of the next character what type is used.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="9" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A_1
\begin_inset space \textvisiblespace{}
\end_inset

,
\backslash
dots
\begin_inset space \textvisiblespace{}
\end_inset

,A_n
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A_{1},\dots,A_{n}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A_1
\begin_inset space \textvisiblespace{}
\end_inset

+
\backslash
dots
\begin_inset space \textvisiblespace{}
\end_inset

+A_n
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A_{1}+\dots+A_{n}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A_1
\begin_inset space \textvisiblespace{}
\end_inset

,
\backslash
ldots
\begin_inset space \textvisiblespace{}
\end_inset

,A_n
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A_{1},\ldots,A_{n}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A_1
\begin_inset space \textvisiblespace{}
\end_inset

+
\backslash
cdots
\begin_inset space \textvisiblespace{}
\end_inset

+A_n
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A_{1}+\cdots+A_{n}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vdots
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\vdots$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddots
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddots$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
iddots
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\iddots$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
3×3
\begin_inset space \thinspace{}
\end_inset

matrix with the different dots
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{array}{ccc}
A_{11} & \cdots & A_{1m}\\
\vdots & \ddots & \vdots\\
A_{n1} & \cdots & A_{nm}
\end{array}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The ellipses available in menu 
\family sans
Insert\SpecialChar menuseparator
Special
\begin_inset space ~
\end_inset

Character
\family default
 are 
\series bold

\backslash
ldots
\series default
.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

To use 
\series bold

\backslash
iddots
\series default
, one of the options 
\family sans
Use mathdots package (automatically)
\family default
 must be set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
.
\begin_inset Newline newline
\end_inset

Using the option 
\family sans
Use mathdots package
\family default
 will improve the appearance of all dots in the documents if their font
 style or size is not the default.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

Specially for matrices there are ellipses that span over several columns.
 They are created with the command 
\series bold

\backslash
hdotsfor
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hdotsfor
\end_layout

\end_inset

, that has the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
hdotsfor[distance]{number of columns}
\end_layout

\begin_layout Standard
The number of columns specifies how many columns should be spanned.
 Distance is a factor for the distance between the dots.
\end_layout

\begin_layout Standard
In the following matrix the command 
\series bold

\backslash
hdotsfor[2]{4}
\series default
 was inserted in the first box of the second line, to get an ellipsis with
 a dot distance twice as long as with the command 
\series bold

\backslash
dots
\series default
:
\begin_inset Formula 
\[
\left(\begin{array}{cccc}
A & B & C & D\\
\hdotsfor[2]{4}\\
q & w & e & r
\end{array}\right)
\]

\end_inset

Note that the matrix fields that should be spanned must be empty, otherwise
 you get \SpecialChar LaTeX
-errors.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Furthermore you can fill with the command 
\series bold

\backslash
dotfill
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dotfill
\end_layout

\end_inset

 the rest of a line with dots.
 The effect of these commands is the same as with 
\series bold

\backslash
hfill
\series default
, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Variable-Space"

\end_inset

.
\end_layout

\begin_layout Standard
For example the command 
\series bold
A
\backslash
dotfill
\begin_inset space \textvisiblespace{}
\end_inset

B
\series default
 produces
\end_layout

\begin_layout Standard
\begin_inset Formula $A\dotfill B$
\end_inset


\end_layout

\begin_layout Standard
Similar to
\series bold
 
\backslash
dotfill
\series default
 there is for a line the command 
\series bold

\backslash
hrulefill
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hrulefill
\end_layout

\end_inset

:
\end_layout

\begin_layout Standard
\begin_inset Formula $A\hrulefill B$
\end_inset


\end_layout

\begin_layout Standard
To use the commands for text, they have to be inserted in \SpecialChar TeX
 mode.
\end_layout

\begin_layout Section
Matrices
\begin_inset CommandInset label
LatexCommand label
name "sec:Matrices"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Matrices
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Matrices can be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "dialog-show mathmatrix"
\end_inset

 or the menu 
\family sans
Insert\SpecialChar menuseparator
Math\SpecialChar menuseparator
Matrix
\family default
.
 In the matrix dialog you can specify the number of columns and rows, the
 alignment and the decoration.
 The vertical alignment is only of importance for matrices in inline formulas:
\end_layout

\begin_layout Standard
The first matrix is top 
\begin_inset Formula $\begin{array}[t]{cccc}
A & D & G & J\\
B & E & H & K\\
C & F & I & L
\end{array}$
\end_inset

, the second middle 
\begin_inset Formula $\begin{array}{cccc}
A & D & G & J\\
B & E & H & K\\
C & F & I & L
\end{array}$
\end_inset

 and the third bottom 
\begin_inset Formula $\begin{array}[b]{cccc}
A & D & G & J\\
B & E & H & K\\
C & F & I & L
\end{array}$
\end_inset

 aligned.
\end_layout

\begin_layout Standard
The horizontal alignment specifies how the column entries should be aligned.
 It is set by entering a letter for every column.
 
\emph on
l
\emph default
 denotes left aligned, 
\emph on
c
\emph default
 centered and 
\emph on
r
\emph default
 right aligned.
 To create for example a 4
\series bold
×
\series default
4
\begin_inset space ~
\end_inset

matrix where the first column is left aligned, the second and third are
 centered and the last one is right aligned, one enters for the horizontal
 alignment 
\series bold
lccr
\series default
.
 Normally in a matrix all columns are centered, therefore the default for
 every column is a 
\series bold
c
\series default
.
\end_layout

\begin_layout Standard
Horizontal alignment:
\end_layout

\begin_layout Standard

\series bold
lll
\series default
 : 
\begin_inset Formula $\begin{array}{lll}
10000 & D & G\\
B & 10000 & H\\
C & F & 10000
\end{array}$
\end_inset

 , 
\series bold
ccc
\series default
 : 
\begin_inset Formula $\begin{array}{ccc}
10000 & D & G\\
B & 10000 & H\\
C & F & 10000
\end{array}$
\end_inset

 , 
\series bold
rrr
\series default
 : 
\begin_inset Formula $\begin{array}{rrr}
10000 & D & G\\
B & 10000 & H\\
C & F & 10000
\end{array}$
\end_inset


\end_layout

\begin_layout Standard
To add or delete rows and columns subsequently, the math toolbar buttons
 
\begin_inset Info
type  "icon"
arg   "tabular-feature append-row"
\end_inset

, 
\begin_inset Info
type  "icon"
arg   "tabular-feature delete-row"
\end_inset

, etc.
\begin_inset space \thinspace{}
\end_inset

, or the menu 
\family sans
Edit\SpecialChar menuseparator
Rows & Columns
\family default
 can be used.
 New rows can also be created with 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

The 
\family sans
Decoration
\family default
 adds parentheses in the selected style around the matrix.
 Alternatively, parentheses can can either be created with the commands
 
\series bold

\backslash
left
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
left
\end_layout

\end_inset

 and 
\series bold

\backslash
right
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
right
\end_layout

\end_inset

 (shortcut 
\family sans
Alt+M
\begin_inset space ~
\end_inset

Parenthesis
\family default
), see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Automatic-Bracket-Size"

\end_inset

, or by using the following commands:
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bmatrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{bmatrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{bmatrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Bmatrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{Bmatrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{Bmatrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
pmatrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{pmatrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{pmatrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vmatrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{vmatrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{vmatrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Vmatrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{Vmatrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{Vmatrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
matrix
\begin_inset space \textvisiblespace{}
\end_inset

2
\series bold
×
\series default
2
\begin_inset space \thinspace{}
\end_inset

matrix
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\begin{matrix}\begin{array}{cc}
0 & \textrm{-}\mathrm{i}\\
\mathrm{i} & 0
\end{array}\end{matrix}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

When e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset


\series bold

\backslash
vmatrix
\series default
 is inserted, a blue box appears between two vertical lines where the matrix
 is inserted.
\begin_inset Newline newline
\end_inset

Note that decorated matrices ignore the vertical alignment.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

As all multiline formulas are matrices, the length 
\series bold

\backslash
arraycolsep
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
arraycolsep
\end_layout

\end_inset

 that is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Column-Separation"

\end_inset

 can also be used to change the column separation of matrices.
\end_layout

\begin_layout Standard
To change the row separation, the command 
\series bold

\backslash
arraystretch
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
arraystretch
\end_layout

\end_inset

 is used.
 It is used as follows:
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
arraystretch}{stretch factor}
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
renewcommand
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
renewcommand
\series default
 assigns the stretch factor to the predefined command 
\series bold

\backslash
arraystretch
\series default
.
 To double e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

the row separation, use the factor 2.
 This is then used for all following matrices.
 To go back to the original separation, assign the factor 1 to 
\series bold

\backslash
arraystretch
\series default
.
\end_layout

\begin_layout Standard
To set matrices into a text line, the command 
\series bold

\backslash
smallmatrix
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
smallmatrix
\end_layout

\end_inset

 is used.
 When it is inserted a blue box with two dashed lines appears.
 In this box the matrix is inserted.
\end_layout

\begin_layout Standard
This is a matrix 
\begin_inset Formula $\left(\begin{smallmatrix}A & B\\
C & D
\end{smallmatrix}\right)$
\end_inset

 in a text line.
\end_layout

\begin_layout Section
Brackets and Delimiters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Brackets
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Delimiters
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Vertical Brackets and Delimiters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Brackets ! vertical
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="9" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
(
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $($
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
{
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\{$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
[
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $[$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
langle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\langle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lceil
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\lceil$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lfloor
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\lfloor$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
/
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $/$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
|
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $|$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="9" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
}
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
]
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $]$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rangle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rangle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rceil
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rceil$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rfloor
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rfloor$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\backslash

\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\backslash$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
|
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\|$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard

\series medium
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 In \SpecialChar TeX
 mode the command 
\series bold

\backslash
textbackslash
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
textbackslash
\end_layout

\end_inset

 must be used for the backslash, because the command 
\series bold

\backslash

\backslash

\series default
 produces a line break there.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For all characters listed above the size can be adjusted with the commands
 described in the following two subsections.
 When using these commands, the characters < and > can directly be used
 instead of the commands 
\series bold

\backslash
langle
\series default
 and 
\series bold

\backslash
rangle
\series default
.
\end_layout

\begin_layout Subsubsection
Manual Bracket Size
\begin_inset CommandInset label
LatexCommand label
name "subsec:Manual-Bracket-Size"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Bracket size ! manual
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The bracket size can be specified manually by the \SpecialChar LaTeX
-commands 
\series bold

\backslash
big
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
big
\end_layout

\end_inset

, 
\series bold

\backslash
Big
\series default
, 
\series bold

\backslash
bigg
\series default
 and 
\series bold

\backslash
Bigg
\series default
.
 
\series bold

\backslash
big
\series default
 denotes the smallest and 
\series bold

\backslash
Bigg
\series default
 the largest bracket size.
\end_layout

\begin_layout Standard
These commands are used to emphasize levels of brackets:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
all brackets in the same size:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $((A+B)(A-B))^{C}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
this looks better:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Big((A+B)(A-B)\Big)^{C}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
For the second formula the command 
\series bold

\backslash
Big((A+B)(A-B)
\backslash
Big)^
\begin_inset space \textvisiblespace{}
\end_inset

C
\series default
 has been used.
\end_layout

\begin_layout Standard
Here is an overview about all bracket sizes:
\end_layout

\begin_layout Standard
\align center

\backslash
Bigg(
\backslash
exp
\backslash
bigg<
\backslash
Big[
\backslash
big{
\backslash
ln(3x)
\backslash
big}^2
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
sin(x)
\backslash
Big]^
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
bigg>
\backslash
Bigg)^0,5
\end_layout

\begin_layout Standard
\align center
\begin_inset Formula $\Bigg(\exp\bigg<\Big[\big\{\ln(3x)\big\}^{2}\sin(x)\Big]^{A}\bigg>\Bigg)^{0,5}$
\end_inset


\end_layout

\begin_layout Standard
Besides the 
\series bold

\backslash
big
\series default
-commands there is the variant 
\series bold

\backslash
bigm
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
bigm
\end_layout

\end_inset

 that adds a bit more space between the bracket and its content, and the
 variant 
\series bold

\backslash
bigl
\series default
-
\series bold

\backslash
bigr
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
bigl - 
\backslash
bigr
\end_layout

\end_inset

, that don't add additional space.
 The 
\emph on
l
\emph default
 at the end of the command 
\series bold

\backslash
bigl
\series default
 is for a left bracket; for a right bracket this will be replaced by an
 
\emph on
r
\emph default
.
 A left or right bracket can each be an opening or closing bracket.
\end_layout

\begin_layout Standard
In the following table is a comparison of the variants:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="middle">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Bigm(
\backslash
bigm(
\backslash
ln(3x)
\backslash
bigm)^2
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
Bigm)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Bigm(\bigm(\ln(3x)\bigm)^{2}\Bigm)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Big(
\backslash
big(
\backslash
ln(3x)
\backslash
big)^2
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
Big)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Big(\big(\ln(3x)\big)^{2}\Big)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Bigl(
\backslash
bigl(
\backslash
ln(3x)
\backslash
bigr)^2
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
Bigr)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Bigl(\bigl(\ln(3x)\bigr)^{2}\Bigr)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="0.5mm">
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigl)
\backslash
ln(3x)
\backslash
bigr(
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigl)\ln(3x)\bigr($
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsubsection
Automatic Bracket Size
\begin_inset CommandInset label
LatexCommand label
name "subsec:Automatic-Bracket-Size"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Bracket size ! automatic
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Brackets with variable size can be inserted with the commands 
\series bold

\backslash
left
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
left
\end_layout

\end_inset

 and 
\series bold

\backslash
right
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
right
\end_layout

\end_inset

 or via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "dialog-show mathdelimiter"
\end_inset

.
 Directly behind 
\series bold

\backslash
left
\series default
 and 
\series bold

\backslash
right
\series default
 the wanted bracket must be inserted.
 The bracket size will then automatically be calculated for the output.
\end_layout

\begin_layout Standard
\align center
normal bracket: The command 
\series bold

\backslash
ln(
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

C
\begin_inset space \textvisiblespace{}
\end_inset

)
\series default
 creates
\begin_inset Formula 
\[
\ln(\frac{A}{C})
\]

\end_inset


\end_layout

\begin_layout Standard
\align center
multiline bracket: The command 
\series bold

\backslash
ln
\backslash
left(
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

C
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
right)
\series default
 creates
\begin_inset Formula 
\[
\ln\left(\frac{A}{C}\right)
\]

\end_inset


\end_layout

\begin_layout Standard
Instead of 
\series bold

\backslash
left
\series default
 and 
\series bold

\backslash
right
\series default
 the shortcut 
\family sans
Alt+M
\begin_inset space ~
\end_inset

Bracket
\family default
 can be used.
 This has the advantage that you can see in \SpecialChar LyX
 immediately the real bracket
 size and that the matching right bracket will be created too.
\begin_inset Newline newline
\end_inset

The command for the last example would then be: 
\series bold

\backslash
ln Alt+M
\series default
 
\series bold
(
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

C
\end_layout

\begin_layout Standard
To omit a left or right bracket, a dot is inserted for the omitted bracket.
 For example the command 
\series bold

\backslash
left.
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
right}
\series default
 creates:
\series bold

\begin_inset Formula 
\[
\left.\frac{A}{B}\right\} 
\]

\end_inset


\series default
The commands 
\series bold

\backslash
left
\series default
 and 
\series bold

\backslash
right
\series default
 will be converted by \SpecialChar LyX
 to brackets in the right size when the document is
 reloaded and an omitted bracket will appear as dashed line.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Because all popular \SpecialChar LaTeX
 distributions use e\SpecialChar TeX
, an extension to \SpecialChar LaTeX
, the command
 
\series bold

\backslash
middle
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
middle
\end_layout

\end_inset

 is additionally available for all brackets and limits.
 With this command the height of the following character is adapted to the
 one of the surrounding brackets, what is e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

needed for physical vectors:
\begin_inset Formula 
\[
\left\langle \phi\:\middle|\:J=\frac{3}{2}\,,\,M_{J}\right\rangle 
\]

\end_inset

For physical vectors there is a special \SpecialChar LaTeX
-package, described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Physical-Vectors"

\end_inset

.
\end_layout

\begin_layout Subsection
Horizontal Brackets
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Brackets ! horizontal
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overbrace
\begin_inset space \textvisiblespace{}
\end_inset

A+B
\begin_inset space \textvisiblespace{}
\end_inset

^3
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
overbrace
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overbrace{A+B}^{3}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
underbrace
\begin_inset space \textvisiblespace{}
\end_inset

A+B
\begin_inset space \textvisiblespace{}
\end_inset

_5
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
underbrace
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underbrace{A+B}_{5}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overbrace
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
underbrace
\begin_inset space \textvisiblespace{}
\end_inset

A+B_w
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

_7
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

^
\begin_inset space \textvisiblespace{}
\end_inset

C
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overbrace{\underbrace{A+B_{w}}_{7}}^{C}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
In the last example it doesn't matter if 
\series bold

\backslash
overbrace
\series default
 or 
\series bold

\backslash
underbrace
\series default
 is inserted at first.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
If you set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
, you have access to square backets:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
overbracket
\family default
\series default
\shape default
\size default
\emph default
\bar default
\strikeout default
\uuline default
\uwave default
\noun default
\color inherit
{A+B
\begin_inset space \textvisiblespace{}
\end_inset

^3
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
overbracket
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overbracket{A+B}^{3}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
under
\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
bracket
\family default
\series default
\shape default
\size default
\emph default
\bar default
\strikeout default
\uuline default
\uwave default
\noun default
\color inherit
{A+B
\begin_inset space \textvisiblespace{}
\end_inset

_5
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
under
\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
bracket
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underbracket{A+B}_{5}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overbracket{
\backslash
underbracket{A+B_w
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

_7
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

^
\begin_inset space \textvisiblespace{}
\end_inset

C
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overbracket{\underbracket{A+B_{w}}_{7}}^{C}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
For 
\series bold

\backslash
overbracket
\series default
 and 
\series bold

\backslash
underbracket
\series default
 you can change the thickness of the bracket's stroke by specifying the
 desired thickness in square brackets behind the command:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
overbracket
\family default
\series default
\shape default
\size default
\emph default
\bar default
\strikeout default
\uuline default
\uwave default
\noun default
\color inherit
[3pt]
\backslash
{A+B
\begin_inset space \textvisiblespace{}
\end_inset

^3
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overbracket[3pt]{A+B}^{3}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
under
\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
bracket
\family default
\series default
\shape default
\size default
\emph default
\bar default
\strikeout default
\uuline default
\uwave default
\noun default
\color inherit
[1pt]
\backslash
{A+B
\begin_inset space \textvisiblespace{}
\end_inset

_5
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underbracket[1pt]{A+B}_{5}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

When brackets should overlap each other, multiline formulas, as described
 in 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Multiline-Formulas"

\end_inset

, must be used:
\begin_inset Formula 
\begin{eqnarray*}
A & = & \underbrace{gggg+bbqq}_{r}+\:dddd\\
 &  & \hphantom{gggg+\:}\underbrace{\hphantom{bbqq+dddd}}_{s}
\end{eqnarray*}

\end_inset

In the first row the formula is inserted together with the first brace.
 It is hereby important that the space command
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Space commands are explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Predefined-Space"

\end_inset

.
\end_layout

\end_inset

 
\series bold

\backslash
:
\series default
 is inserted before the first 
\begin_inset Formula $d$
\end_inset

, because the brace that ends behind the 
\begin_inset Formula $q$
\end_inset

 prevents that the following 
\begin_inset Quotes eld
\end_inset

+
\begin_inset Quotes erd
\end_inset

 is surrounded by space.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
because a bracket is not handled as a character, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Binary-Operators"

\end_inset


\end_layout

\end_inset

 In the second row the second brace is inserted.
 As it should begin before the 
\begin_inset Formula $b$
\end_inset

, first the command 
\series bold

\backslash
hphantom{gggg+
\backslash
:}
\series default
 is inserted.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
more about 
\series bold

\backslash
hphantom
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Placeholders"

\end_inset


\end_layout

\end_inset

 This space is needed because the 
\begin_inset Quotes eld
\end_inset

+
\begin_inset Quotes erd
\end_inset

 is also surrounded by space in the formula.
 The brace is placed under the command 
\series bold

\backslash
hphantom{bbqq+dddd}
\series default
.
\end_layout

\begin_layout Standard
It gets more complicated when brackets overlap each other above and under
 the formula, like in the following example:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
jot}{-6pt}
\end_layout

\end_inset


\begin_inset Formula 
\begin{eqnarray*}
 &  & \hphantom{gggg+\:}\overbrace{\hphantom{bbqq+dddd}}^{s}\\
A & = & \underbrace{gggg+bbqq}_{r}+\:dddd
\end{eqnarray*}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
jot}{3pt}
\end_layout

\end_inset

The first formula row is the same as the second row of the previous example,
 with the difference that the brace is above.
 The second row contains the formula together with the second brace.
 To avoid that there is space between the upper brace in the first row and
 the formula, the row spacing needs to be reduced.
 This is not easily possible due to a bug in \SpecialChar LyX
.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #1505"
target "https://www.lyx.org/trac/ticket/1505"
literal "false"

\end_inset


\end_layout

\end_inset

 As a solution for the problem, the global formula row separation 
\series bold

\backslash
jot
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! J ! 
\backslash
jot
\end_layout

\end_inset

 must be changed to -6
\begin_inset space \thinspace{}
\end_inset

pt before the formula with the command 
\series bold

\backslash
setlength{
\backslash
jot}{-6pt}
\series default
 in \SpecialChar TeX
 mode.
 
\series bold

\backslash
jot
\series default
 is set back after the formula to the standard value of 3
\begin_inset space \thinspace{}
\end_inset

pt using the same command.
 More about the row separation in formulas is explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Line-Separation"

\end_inset

.
\end_layout

\begin_layout Section
Arrows
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Arrows
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Arrows can be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\leftarrow"
\end_inset

 or the commands listed in the following subsections.
\end_layout

\begin_layout Subsection
Horizontal Arrows
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Arrows ! horizontal
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
gets
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\gets$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Leftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Leftarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
longleftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\longleftarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Longleftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Longleftarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leftharpoonup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\leftharpoonup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leftharpoondown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\leftharpoondown$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hookleftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\hookleftarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
to
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\to$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Rightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Rightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
longrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\longrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Longrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Longrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rightharpoonup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rightharpoonup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rightharpoondown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rightharpoondown$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hookrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\hookrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\leftrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Leftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Leftrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
longleftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\longleftrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Longleftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Longleftrightarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rightleftharpoons
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rightleftharpoons$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hspace{}
\length 25pt
\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mapsto
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mapsto$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
longmapsto
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\longmapsto$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leadsto
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\leadsto$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dasharrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dasharrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

Arrows used as accents like e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

vector arrows are listed in 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Accents"

\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Furthermore there are the labeled arrows
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Arrows ! labeled
\end_layout

\end_inset

 
\series bold

\backslash
xleftarrow
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! X ! 
\backslash
xleftarrow
\end_layout

\end_inset

 and 
\series bold

\backslash
xrightarrow
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! X ! 
\backslash
xrightarrow
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset

.
 When inserting one of these commands in a formula, an arrow with two blue
 boxes appear where the label can be inserted.
 The length of the arrow adapts to the label width.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
F(a)
\backslash
xleftarrow
\begin_inset space \textvisiblespace{}
\end_inset

x=a
\begin_inset Formula $\downarrow$
\end_inset

x>0
\begin_inset Formula $\to$
\end_inset

F(x)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $F(a)\xleftarrow[x>0]{x=a}F(x)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
F(x)
\backslash
xrightarrow
\begin_inset space \textvisiblespace{}
\end_inset

x=a
\begin_inset Formula $\downarrow$
\end_inset

x>0
\begin_inset Formula $\to$
\end_inset

F(a)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $F(x)\xrightarrow[x>0]{x=a}F(a)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
If you set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
, you have access to the following labeled arrows:
\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Example
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none

\backslash
xleftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xleftrightarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none

\backslash
xLeftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xLeftarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xRightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xRightarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xLeftrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xLeftrightarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none

\backslash
xhookleftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xhookleftarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none

\backslash
xhookrightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xhookrightarrow[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Example
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xleftharpoondown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xleftharpoondown[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xleftharpoonup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xleftharpoonup[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xrightharpoondown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xrightharpoondown[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xrightharpoonup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xrightharpoonup[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xleftrightharpoons
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xleftrightharpoons[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="2mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\strikeout off
\uuline off
\uwave off
\noun off
\color none
xrightleftharpoons
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xrightleftharpoons[x=a]{x>0}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\end_layout

\begin_layout Standard
The command scheme is for all these arrows:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row bottomspace="0.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
F(a)
\backslash
xleftrightarrow[x=a]
\backslash
{x>0
\begin_inset Formula $\to$
\end_inset

F(x)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $F(a)\xleftrightarrow[x=a]{x>0}F(x)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Vertical and diagonal Arrows
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Arrows ! diagonal
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Arrows ! vertical
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
uparrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\uparrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Uparrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Uparrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
updownarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\updownarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Updownarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Updownarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Downarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Downarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
downarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\downarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nearrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nearrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
searrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\searrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
swarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\swarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nwarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nwarrow$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

Vertical arrows can be used also as delimiters together with the commands
 described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Manual-Bracket-Size"

\end_inset

 and 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Automatic-Bracket-Size"

\end_inset

.
\end_layout

\begin_layout Section
Accents
\begin_inset CommandInset label
LatexCommand label
name "sec:Accents"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Accents
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Accents can be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\hat"
\end_inset

 or the commands listed in the following subsections.
\end_layout

\begin_layout Subsection
Accents for one Character
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
texorpdfstring{
\end_layout

\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
accents in text see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Accents-in-Text"

\end_inset


\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}{}
\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
texorpdfstring
\series default
 is used to avoid that the footnote appears in the PDF-bookmark.
\end_layout

\begin_layout Plain Layout
More about 
\series bold

\backslash
texorpdfstring
\series default
 is in section 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Formulas-in-Section"

\end_inset

.
\end_layout

\end_inset


\begin_inset CommandInset label
LatexCommand label
name "subsec:Accents-for-one"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Accents ! for one character
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dot
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dot{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddot
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddot{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dddot
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dddot{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddddot
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddddot{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vec
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Vectors
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\vec{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bar
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bar{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathring
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathring{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
tilde
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\tilde{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hat
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\hat{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
check
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\check{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
acute
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\acute{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
grave
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\grave{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
breve
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\breve{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\end_layout

\begin_layout Standard
You can directly insert accents like é to formulas.
 \SpecialChar LyX
 will transform them to the corresponding accent command.
 For umlauts
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Umlauts
\end_layout

\end_inset

 it is better to insert a quotation mark before the vowel.
 These two characters are then treated by \SpecialChar LaTeX
 as 
\emph on
one
\emph default
 character when the formula part with the umlaut is marked as German.
 In contrary to 
\series bold

\backslash
ddot
\series default
, with this method 
\begin_inset Quotes eld
\end_inset

real
\begin_inset Quotes erd
\end_inset

 umlauts are created as demonstrated in the following example:
\end_layout

\begin_layout Standard
\begin_inset VSpace -2mm
\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Quotes grd
\end_inset

i
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset space \hspace{}
\length 0pt
\end_inset


\lang ngerman

\begin_inset Formula $"i$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddot
\begin_inset space \textvisiblespace{}
\end_inset

i
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddot{i}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
Another advantage to 
\series bold

\backslash
ddot
\series default
 is that umlauts can directly be converted to mathematical text because
 the accent commands above are 
\emph on
not allowed
\emph default
 
\emph on
in mathematical text
\emph default
.
 To convert an accented character to mathematical text, only the character
 under the accent may be converted.
 This applies also for all other conversions, e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

to italic or bold.
\end_layout

\begin_layout Standard
In mathematical text, umlauts and other accented characters can directly
 be inserted.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\end_layout

\begin_layout Standard
\SpecialChar LyX
 also supports a tilde under the character if the \SpecialChar LaTeX
-package 
\series bold
undertilde
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! undertilde
\end_layout

\end_inset

 is installed on your system:
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
ifundertilde 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following table will only be displayed when the \SpecialChar LaTeX
-package 
\series bold
undertilde
\series default
 is installed.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\noindent
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
utilde
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\utilde{A}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
else 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following will be displayed when the \SpecialChar LaTeX
-package 
\series bold
undertilde
\series default
 is not installed:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
You need to install the \SpecialChar LaTeX
-package 
\series bold
undertilde
\series default
 to see the rest of this subsection in the output.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fi 
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Subsection
Accents for several Characters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Accents ! for several characters
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overleftarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overleftarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
underleftarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underleftarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overleftrightarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overleftrightarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
underleftrightarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underleftrightarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
overrightarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\overrightarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
underrightarrow
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\underrightarrow{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
widetilde
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\widetilde{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
widehat
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\widehat{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

With these commands as many characters as you like can be accented.
 But the accents 
\series bold

\backslash
widetilde
\series default
 and 
\series bold

\backslash
widehat
\series default
 will only be set in the output with a length of three characters, as shown
 in the following example:
\begin_inset Formula 
\[
\widetilde{A+B=C-D}
\]

\end_inset


\end_layout

\begin_layout Standard
With the commands 
\series bold

\backslash
overset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
overset
\end_layout

\end_inset

 and 
\series bold

\backslash
underset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
underset
\end_layout

\end_inset

 described in the previous subsection it is also possible to accent several
 characters.
 The command 
\series bold

\backslash
underset
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\begin_inset Formula $\downarrow$
\end_inset

***
\series default
 creates:
\begin_inset Formula 
\[
\underset{***}{A=B}
\]

\end_inset


\end_layout

\begin_layout Section
Space
\begin_inset CommandInset label
LatexCommand label
name "subsec:Space"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Space ! horizontal
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Predefined Space
\begin_inset CommandInset label
LatexCommand label
name "subsec:Predefined-Space"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Space ! horizontal ! predefined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Sometimes it is necessary to insert horizontal space into a formula.
 This is done by inserting a protected space (shortcut 
\begin_inset Info
type  "shortcut"
arg   "command-alternatives space-insert protected ; math-space"
\end_inset

).
 A 
\begin_inset Quotes eld
\end_inset


\color blue

\begin_inset space \textvisiblespace{}
\end_inset


\color inherit

\begin_inset Quotes erd
\end_inset

 appears and by pressing 
\family sans
Space
\family default
 several times one can select one of eight different space sizes.
 The spaces can also be inserted using the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\space"
\end_inset

 or special commands.
 Independent from the inserted command, one can select the size again by
 pressing 
\family sans
Space
\family default
 afterwards.
\end_layout

\begin_layout Standard
\noindent
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top" width="15col%">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Number of 
\family sans
Space
\family default
 keystrokes
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
,
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
0
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\,B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
1
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\:B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
;
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
2
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\;B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
quad
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
3
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\quad B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
qquad
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
4
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\qquad B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top" width="15col%">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Number of 
\family sans
Space
\family default
 keystrokes
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hfill
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
5
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\hfill B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hspace*{1em}
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
6
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\hspace*{1em}B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hspace{1em}
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
7
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\hspace{1em}B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
8
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\ B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
!
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
9
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\!B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
Space
\begin_inset space ~
\end_inset

5
\begin_inset space \thinspace{}
\end_inset

–
\begin_inset space \thinspace{}
\end_inset

7 are variable spaces which are explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Variable-Space"

\end_inset

.
 Space
\begin_inset space ~
\end_inset

9 seems to produce no space.
 It is displayed red in \SpecialChar LyX
 contrary to the other sizes, because it is a negative
 space.
 There are two more negative spaces:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="middle" width="6.8cm">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
negmedspace
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
negthickspace
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Number of 
\family sans
Space
\family default
 keystrokes after inserting the protected space
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
10
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
11
\end_layout

\end_inset
</cell>
</row>
<row>
<cell multicolumn="1" alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\negmedspace B$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\negthickspace B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
Negative spaces can lead to characters overlapping each other.
 Thus they can be used to enforce ligatures, which are e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

useful for summation operators:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sum
\backslash
sum
\begin_inset space \textvisiblespace{}
\end_inset

f_kl
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sum\sum f_{kl}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sum
\backslash
negmedspace
\backslash
sum
\begin_inset space \textvisiblespace{}
\end_inset

f_kl
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sum\negmedspace\sum f_{kl}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\noindent
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
\noindent
Relations like for example equal signs, are always surrounded by space.
 To suppress this, the equal sign is placed into a \SpecialChar TeX
 brace.
 The following example demonstrates this:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
normal equation
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A=B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
equation without space
\end_layout

\end_inset
</cell>
<cell multicolumn="1" alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A{=}B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\noindent
The command for the last formula is: 
\series bold
A
\backslash
{=
\begin_inset Formula $\to$
\end_inset

B
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\end_layout

\begin_layout Standard
Spaces are needed for physical units, because the space between the value
 and the unit is the smallest one and not a normal space.
 For units in text, the smallest space is inserted via the menu 
\family sans
Insert\SpecialChar menuseparator
Formatting\SpecialChar menuseparator
Thin
\begin_inset space ~
\end_inset

Space
\family default
 (shortcut 
\begin_inset Info
type  "shortcut"
arg   "space-insert thin"
\end_inset

).
\end_layout

\begin_layout Standard
An example to visualize the difference:
\end_layout

\begin_layout Standard
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features tabularvalignment="middle">
<column alignment="left" valignment="top">
<column alignment="left" valignment="top">
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
24 kW
\begin_inset Formula $\cdot$
\end_inset

h
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
space between value and unit
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
24
\begin_inset space \thinspace{}
\end_inset

kW
\begin_inset Formula $\cdot$
\end_inset

h
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
smallest space between value and unit
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Variable Space
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
texorpdfstring{
\end_layout

\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
for vertical space in formulas see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Line-Separation"

\end_inset


\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}{}
\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\backslash
texorpdfstring is used to avoid that the footnote appears in the PDF-bookmark.
\end_layout

\begin_layout Plain Layout
More about 
\backslash
texorpdfstring is in section 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Formulas-in-Section"

\end_inset

.
\end_layout

\end_inset


\begin_inset CommandInset label
LatexCommand label
name "subsec:Variable-Space"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Space ! horizontal ! variable
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Space with a defined length can be inserted with the command 
\series bold

\backslash
hspace
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hspace
\end_layout

\end_inset

.
 Then a long 
\begin_inset Quotes eld
\end_inset


\color blue

\begin_inset space \textvisiblespace{}
\end_inset


\color inherit

\begin_inset Quotes erd
\end_inset

 appears.
 The length can be specified by left-clicking on the 
\begin_inset Quotes eld
\end_inset


\color blue

\begin_inset space \textvisiblespace{}
\end_inset


\color inherit

\begin_inset Quotes erd
\end_inset

.
 The length may also be negative.
 When a space would be the first character in a line it would be omitted.
 To force its output use the command 
\series bold

\backslash
hspace*
\series default
 instead of 
\series bold

\backslash
hspace
\series default
 or left-click on the 
\begin_inset Quotes eld
\end_inset


\color blue

\begin_inset space \textvisiblespace{}
\end_inset


\color inherit

\begin_inset Quotes erd
\end_inset

 and check the option 
\family sans
Protect
\family default
.
\begin_inset Newline newline
\end_inset

To insert as much space as is available, the command 
\series bold

\backslash
hfill
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hfill
\end_layout

\end_inset

 is used.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command (
\backslash
hspace length)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A=B
\backslash
hspace
\begin_inset space \textvisiblespace{}
\end_inset

A
\backslash
not=C (3
\begin_inset space \thinspace{}
\end_inset

cm)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A=B\hspace{3cm}A\not=C$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A
\backslash
hspace
\begin_inset space \textvisiblespace{}
\end_inset

A
\backslash
not=A (-1
\begin_inset space \thinspace{}
\end_inset

mm)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\hspace{-1mm}A\not=A$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A=A
\backslash
hfill
\begin_inset space \textvisiblespace{}
\end_inset

B=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A=A\hfill B=B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
In the last example the available space is given by the longest column entry
 of the table.
 In an inline formula the space depends on the length of the line in which
 
\series bold

\backslash
hfill
\series default
 is inserted.
 Thus, when the line uses the full width, no space will be created.
 
\series bold

\backslash
hfill
\series default
 only has an effect on displayed formulas when the formula style 
\series bold
Indented
\series default
 is used.
 (Formula styles are explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset

.)
\end_layout

\begin_layout Standard
Besides 
\series bold

\backslash
hfill
\series default
, there are the commands 
\series bold

\backslash
dotfill
\series default
 and 
\series bold

\backslash
hrulefill
\series default
 that fill the space with a pattern, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Ellipses"

\end_inset

 for an example.
\end_layout

\begin_layout Standard
For text, variable space can be inserted via the menu 
\family sans
Insert\SpecialChar menuseparator
Formatting\SpecialChar menuseparator
Horizontal
\begin_inset space ~
\end_inset

Space
\family default
:
\end_layout

\begin_layout Standard
This is a line with
\begin_inset space \hspace{}
\length 2cm
\end_inset

2
\begin_inset space \thinspace{}
\end_inset

cm space.
\end_layout

\begin_layout Standard
This is a line with
\begin_inset space \hfill{}
\end_inset

maximum space.
\end_layout

\begin_layout Subsection
Space besides inline Formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Space ! besides inline formulas
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The space that surrounds inline formulas can be adjusted with the length
 
\series bold

\backslash
mathsurround
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
mathsurround
\end_layout

\end_inset

.
 The value of a length is set with the command 
\series bold

\backslash
setlength
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
setlength
\end_layout

\end_inset

 which has the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
setlength{length name}{value}
\end_layout

\begin_layout Standard
To set 
\series bold

\backslash
mathsurround
\series default
 to the value 5
\begin_inset space \thinspace{}
\end_inset

mm, the command
\end_layout

\begin_layout Standard

\series bold

\backslash
setlength{
\backslash
mathsurround}{5mm}
\end_layout

\begin_layout Standard
is inserted in \SpecialChar TeX
 mode.
 5
\begin_inset space \thinspace{}
\end_inset

mm space will now be set around all inline formulas:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
mathsurround}{5mm}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
This is a line with an inline formula 
\begin_inset Formula $A=B$
\end_inset

 with 5
\begin_inset space \thinspace{}
\end_inset

mm surrounding space.
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
mathsurround}{0pt}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To return to the predefined value, 
\series bold

\backslash
mathsurround
\series default
 is set to the value 0
\begin_inset space \thinspace{}
\end_inset

pt.
\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Section
Boxes and Frames
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Boxes
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Frames | see
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

{
\end_layout

\end_inset

Boxes
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
Boxes for text are described in chapter 
\family typewriter
Boxes
\family default
 in the 
\family typewriter
Embedded
\begin_inset space ~
\end_inset

Objects
\family default
 manual.
\end_layout

\begin_layout Subsection
Boxes with Frame
\begin_inset CommandInset label
LatexCommand label
name "subsec:Boxes-with-Frame"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Boxes ! with frame
\end_layout

\end_inset


\end_layout

\begin_layout Standard
It is possible to frame a formula or part of one with the commands 
\series bold

\backslash
fbox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! F ! 
\backslash
fbox
\end_layout

\end_inset

 and 
\series bold

\backslash
boxed
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
boxed
\end_layout

\end_inset

.
\end_layout

\begin_layout Standard
When one of these commands is inserted in a formula, a blue box appears
 within a frame to enter formula parts.
 For 
\series bold

\backslash
fbox
\series default
 an additional formula has to be created by 
\family sans
Ctrl+M
\family default
 within this box, because the box content will otherwise be treated as mathemati
cal text.
 When 
\series bold

\backslash
boxed
\series default
 is used, a new formula is automatically created inside the frame.
\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
fbox
\series default
 is not suitable to frame displayed formulas because the formula will always
 be set in the size of the text.
 
\series bold

\backslash
boxed
\series default
 is in contrary not suitable to frame inline formulas, because the formula
 will always be set in the size of a displayed formula.
\end_layout

\begin_layout Standard
An extension to 
\series bold

\backslash
fbox
\series default
 is the command 
\series bold

\backslash
framebox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! F ! 
\backslash
framebox
\end_layout

\end_inset

 where additionally the frame width and the alignment can be specified.
 
\series bold

\backslash
framebox
\series default
 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
framebox[frame width][position]{box content}
\end_layout

\begin_layout Standard
The position can either be 
\emph on
l
\emph default
 or 
\emph on
r
\emph default
.
 
\emph on
l
\emph default
 left aligns, 
\emph on
r
\emph default
 right aligns the formula in the box.
 When no position is given, the formula will be centered.
\begin_inset Newline newline
\end_inset

If no width is given, also no position can be given.
 In this case the frame width is adjusted to the box content like for 
\series bold

\backslash
fbox
\series default
.
\end_layout

\begin_layout Standard
When the command 
\series bold

\backslash
framebox
\series default
 is inserted, a box appears containing three blue boxes.
 The first two boxes are surrounded by brackets and denote the two optional
 arguments.
 The third box is for formula parts like for 
\series bold

\backslash
fbox
\series default
.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
fbox
\begin_inset space \textvisiblespace{}
\end_inset


\family sans
Ctrl+M
\family default
 
\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\fbox{\ensuremath{\int A=B}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
boxed
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\boxed{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A+
\backslash
fbox
\begin_inset space \textvisiblespace{}
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A+\fbox{B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
framebox
\begin_inset space \textvisiblespace{}
\end_inset

20mm
\begin_inset Formula $\to$
\end_inset


\begin_inset Formula $\to$
\end_inset


\family sans
Ctrl+M
\family default
 
\backslash
frac
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\downarrow$
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\framebox[20mm][]{\ensuremath{\frac{A}{B}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The frame thickness can also be adjusted.
 To do this the following commands have to be inserted in \SpecialChar TeX
 mode before the
 formula
\end_layout

\begin_layout Standard

\series bold

\backslash
fboxrule
\series default
 
\series bold

\begin_inset Quotes eld
\end_inset

thickness
\begin_inset Quotes erd
\end_inset


\series default
 
\series bold

\backslash
fboxsep
\series default
 
\series bold

\begin_inset Quotes eld
\end_inset

distance
\begin_inset Quotes erd
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Quotes eld
\end_inset

distance
\begin_inset Quotes erd
\end_inset

 specifies the minimal distance between the frame and the first character
 in the box.
 An example for this is the following framed formula:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxrule 2mm 
\backslash
fboxsep 3mm
\end_layout

\end_inset


\begin_inset Formula 
\[
\boxed{A+B=C}
\]

\end_inset

Before this formula the commands
\end_layout

\begin_layout Standard

\series bold

\backslash
fboxrule
\series default
 
\series bold
2mm
\series default
 
\series bold

\backslash
fboxsep
\series default
 
\series bold
3mm
\end_layout

\begin_layout Standard
were inserted in \SpecialChar TeX
 mode.
 The given values are used for all following boxes.
\end_layout

\begin_layout Standard
To return to the standard frame size, the command
\end_layout

\begin_layout Standard

\series bold

\backslash
fboxrule
\series default
 
\series bold
0.4pt
\series default
 
\series bold

\backslash
fboxsep
\series default
 
\series bold
3pt
\series default

\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxrule 0.4pt 
\backslash
fboxsep 3pt
\end_layout

\end_inset


\end_layout

\begin_layout Standard
is inserted in \SpecialChar TeX
 mode before the next formula.
\end_layout

\begin_layout Subsection
Boxes without Frame
\begin_inset CommandInset label
LatexCommand label
name "subsec:Boxes-without-Frame"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Boxes ! without frame
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For boxes without a frame there are the following box commands: 
\series bold

\backslash
mbox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
mbox
\end_layout

\end_inset

, 
\series bold

\backslash
makebox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
makebox
\end_layout

\end_inset

 and 
\series bold

\backslash
raisebox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
raisebox
\end_layout

\end_inset


\end_layout

\begin_layout Standard
With 
\series bold

\backslash
raisebox
\series default
 a box can be super- or subscripted.
 But in contrary to normal super- and subscripting, the characters in the
 box keep their font size.
 
\series bold

\backslash
raisebox
\series default
 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
raisebox{height}{box content}
\end_layout

\begin_layout Standard
When the box should contain a formula, an extra formula is needed like for
 
\series bold

\backslash
fbox
\series default
.
 
\series medium

\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 For 
\series bold

\backslash
raisebox
\series default
 this extra formula is created by pressing 
\family sans
Ctrl+M
\family default
 twice instead of once because \SpecialChar LyX
 doesn't yet support 
\series bold

\backslash
raisebox
\series default
 directly.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
H
\backslash
raisebox{2mm
\begin_inset Formula $\to$
\end_inset


\backslash
{al
\begin_inset Formula $\to$
\end_inset

 lo
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $H\raisebox{2mm}{al}lo$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
H
\backslash
raisebox{-2mm
\begin_inset Formula $\to$
\end_inset


\backslash
{al
\begin_inset Formula $\to$
\end_inset

lo
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $H\raisebox{-2mm}{al}lo$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A=
\backslash
raisebox{-2mm
\begin_inset Formula $\to$
\end_inset


\backslash
{
\family sans
Ctrl+M
\family default
 
\family sans
Ctrl+M
\family default
 
\backslash
sqrt
\begin_inset space \textvisiblespace{}
\end_inset

B 
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A=\raisebox{-2mm}{\mbox{\ensuremath{\sqrt{B}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
mbox
\series default
 is equivalent to 
\series bold

\backslash
fbox
\series default
 and 
\series bold

\backslash
makebox
\series default
 is equivalent to 
\series bold

\backslash
framebox
\series default
, with the difference that there is no frame.
\end_layout

\begin_layout Subsection
Colored Boxes
\begin_inset CommandInset label
LatexCommand label
name "subsec:Colored-Boxes"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Boxes ! colored
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To be able to use all commands explained in this section, the \SpecialChar LaTeX
-package 
\series bold
color
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
The \SpecialChar LaTeX
-package 
\series bold
color
\series default
 is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! color
\end_layout

\end_inset

 has to be loaded in the \SpecialChar LaTeX
-preamble with the line
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
When text is colored somewhere in the document with a predefined color,
 \SpecialChar LyX
 loads the \SpecialChar LaTeX
 package 
\series bold
color
\series default
 automatically.
 Thus it is possible that the package is loaded twice, but this does not
 cause problems.
\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout
To avoid that the package is loaded twice, a macro was inserted to the \SpecialChar LaTeX
-preamble.
\end_layout

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{color}
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

To color boxes, the command 
\series bold

\backslash
colorbox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
colorbox
\end_layout

\end_inset

 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
colorbox{color}{box content}
\end_layout

\begin_layout Standard
The box content can also be a box and a 
\series bold

\backslash
colorbox
\series default
 can also be part of another box (see the 2nd and 3rd example).
 When the box should contain a formula, an extra formula has to be created,
 the same way as for 
\series bold

\backslash
raisebox
\series default
.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
This also applies for the command 
\series bold

\backslash
fcolorbox
\series default
.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
One of the following predefined colors can be chosen:
\end_layout

\begin_layout Standard

\series bold
black
\series default
, 
\series bold
blue
\series default
, 
\series bold
cyan
\series default
, 
\series bold
green
\series default
, 
\series bold
magenta
\series default
, 
\series bold
red
\series default
, 
\series bold
white
\series default
 and 
\series bold
yellow
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
colorbox{yellow
\begin_inset Formula $\to$
\end_inset


\backslash
{A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\colorbox{yellow}{A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
colorbox{green
\begin_inset Formula $\to$
\end_inset


\backslash
{
\backslash
fbox
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\colorbox{green}{\fbox{A=B}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
fbox
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
colorbox{green
\begin_inset Formula $\to$
\end_inset


\backslash
{
\family sans
Ctrl+M
\family default
 
\family sans
Ctrl+M
\family default
 
\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

C=D
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\fbox{\colorbox{green}{\mbox{\ensuremath{\int C=D}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
colorbox
\series default
 only colors the box but not the characters in the box.
 To color all characters, the whole formula is highlighted and the desired
 color is chosen in the 
\family sans
Text
\begin_inset space ~
\end_inset

Style
\family default
 dialog.
 The dialog can be called with the toolbar button 
\begin_inset Info
type  "icon"
arg   "dialog-show character"
\end_inset

 or the menu 
\family sans
Edit\SpecialChar menuseparator
Text
\begin_inset space ~
\end_inset

Style\SpecialChar menuseparator
Customized
\family default
.
 The formula number then has the same color as the formula.
 When the formula number should get another color than the formula characters,
 the color must be changed within the formula.
\end_layout

\begin_layout Standard
An example:
\end_layout

\begin_layout Standard

\color red
\begin_inset Formula 
\begin{equation}
\int A=B\label{eq:red}
\end{equation}

\end_inset


\color green

\begin_inset Formula 
\begin{equation}
\textcolor{red}{\int A=B}\label{eq:redgreen}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
Formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:red"

\end_inset

 is completely colored red.
\begin_inset Newline newline
\end_inset

Formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:redgreen"

\end_inset

 was first completely colored green to set the color for the formula number.
 Subsequently the formula characters were colored red.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

To color the frame different than the rest of the box, the command 
\series bold

\backslash
fcolorbox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! F ! 
\backslash
fcolorbox
\end_layout

\end_inset

 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
fcolorbox{frame color}{color}{box content}
\end_layout

\begin_layout Standard
So 
\series bold

\backslash
fcolorbox
\series default
 is an extension of the command 
\series bold

\backslash
colorbox
\series default
.
 The frame width is set, like for 
\series bold

\backslash
framebox
\series default
, with 
\series bold

\backslash
fboxrule
\series default
 and 
\series bold

\backslash
fboxsep
\series default
.
 An example:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxrule 1mm 
\backslash
fboxsep 1mm
\end_layout

\end_inset


\begin_inset Formula 
\[
\fcolorbox{cyan}{magenta}{A=B}
\]

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxrule 0.4pt 
\backslash
fboxsep 3pt
\end_layout

\end_inset


\end_layout

\begin_layout Standard
This formula was created with the command
\begin_inset Newline newline
\end_inset


\series bold

\backslash
fcolorbox{cyan
\begin_inset Formula $\to$
\end_inset


\backslash
{magenta
\begin_inset Formula $\to$
\end_inset


\backslash
{A=B
\series default
.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

To use other colors than the predefined ones, they have to be defined first.
\end_layout

\begin_layout Standard
One can for example define the color 
\begin_inset Quotes eld
\end_inset


\series bold
darkgreen
\series default

\begin_inset Quotes erd
\end_inset

 with the \SpecialChar LaTeX
-preamble line:
\end_layout

\begin_layout Standard

\series bold

\backslash
definecolor{darkgreen}{cmyk}{0.5,
\series default
 
\series bold
0,
\series default
 
\series bold
1,
\series default
 
\series bold
0.5}
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
definecolor
\end_layout

\end_inset


\end_layout

\begin_layout Standard

\series bold
cmyk
\series default
 is the color space that denotes the colors 
\series bold
cyan
\series default
, 
\series bold
magenta
\series default
, 
\series bold
yellow
\series default
 and 
\series bold
black
\series default
.
 The four comma separated numbers are the portion factor for the corresponding
 colors of the color space.
 The factors can be in the range of 0
\begin_inset space \thinspace{}
\end_inset

-
\begin_inset space \thinspace{}
\end_inset

1.
 Instead of 
\series bold
cmyk
\series default
 also the color space 
\series bold
rgb
\series default
 can be used for definitions.
 
\series bold
rgb
\series default
 denotes 
\series bold
red
\series default
, 
\series bold
green
\series default
 and 
\series bold
blue
\series default
, so that there are in this case three portion factors for the corresponding
 colors.
 Furthermore there is the color space 
\series bold
gray
\series default
 with one portion factor for the gray value.
\end_layout

\begin_layout Standard
As example a framed box with the new defined color 
\series bold
darkgreen
\series default
 where the characters have been colored 
\series bold
yellow
\series default
:
\begin_inset Formula 
\begin{equation}
\colorbox{darkgreen}{\color{yellow}\boxed{\int A\,\mathrm{d}x=\frac{\sqrt[5]{B}}{\ln\left(\frac{1}{3}\right)}}}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
Self-defined colors can also be used for text with the help of the command
 
\series bold

\backslash
textcolor
\series default
:
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Text ! colored
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
textcolor{darkgreen}{
\end_layout

\end_inset

This sentence is 
\begin_inset Quotes eld
\end_inset

darkgreen
\begin_inset Quotes erd
\end_inset

.
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
textcolor
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
textcolor
\end_layout

\end_inset

 is used in the scheme 
\series bold

\backslash
textcolor{color}{characters to color}
\series default
.
\end_layout

\begin_layout Subsection
Paragraph Boxes
\begin_inset CommandInset label
LatexCommand label
name "subsec:Paragraph-Boxes"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Boxes ! as paragraph
\end_layout

\end_inset


\end_layout

\begin_layout Standard
A box that can contain several lines and paragraphs, a so-called paragraph
 box (parbox), can be created with the menu 
\family sans
Insert\SpecialChar menuseparator
Box
\family default
 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "box-insert"
\end_inset

.
\end_layout

\begin_layout Standard
The following example shows a framed parbox in a line:
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

This is a line 
\begin_inset Box Boxed
position "c"
hor_pos "c"
has_inner_box 1
inner_pos "t"
use_parbox 1
use_makebox 0
width "5cm"
special "none"
height "1in"
height_special "totalheight"
thickness "0.4pt"
separation "3pt"
shadowsize "4pt"
framecolor "black"
backgroundcolor "none"
status open

\begin_layout Plain Layout
This is a paragraph box.
 It is exactly 5
\begin_inset space \thinspace{}
\end_inset

cm long and can also contain formulas: 
\begin_inset Formula $\int A\,\mathrm{d}s=C$
\end_inset


\end_layout

\end_inset

 with a parbox.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
Such a box is created by right-clicking on the gray box inset.
 A dialog pops up showing the box properties.
 In our case set: 
\emph on
Decoration
\emph default
: Rectangular box, 
\emph on
Inner Box
\emph default
: Parbox, 
\emph on
Width
\emph default
: 5
\begin_inset space \thinspace{}
\end_inset

cm, 
\emph on
Vertical Box Alignment
\emph default
: Middle
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

In \SpecialChar LaTeX
 a parbox is created with the command 
\series bold

\backslash
parbox
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! P ! 
\backslash
parbox
\end_layout

\end_inset

 which has the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
parbox[position]{width}{box content}
\end_layout

\begin_layout Standard
The positions 
\emph on
b
\emph default
 and 
\emph on
t
\emph default
 are possible.
 
\emph on
b
\emph default
 for 
\begin_inset Quotes eld
\end_inset

bottom
\begin_inset Quotes erd
\end_inset

 means that the box is aligned within the surrounding text with its last
 line.
 With 
\emph on
t
\emph default
 for 
\begin_inset Quotes eld
\end_inset

top
\begin_inset Quotes erd
\end_inset

 this is done with the first line.
 When no position is given, the box will be vertically centered, see section
 
\emph on
Boxes
\emph default
 of the 
\emph on
Embedded
\begin_inset space ~
\end_inset

Objects
\emph default
 manual for examples.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

To frame formulas completely, including the formula number, the formula
 must be set into a parbox.
 To do this, the command 
\series bold

\backslash
fbox{
\backslash
parbox{
\backslash
linewidth-2
\backslash
fboxsep-2
\backslash
fboxrule}{
\series default
 is inserted in \SpecialChar TeX
 mode before the formula.
 
\series bold

\backslash
linewidth
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
linewidth
\end_layout

\end_inset

 is hereby the line width set for the document.
 Because the frame is outside the parbox, 2
\begin_inset space \thinspace{}
\end_inset

times the frame separation and the frame thickness must be subtracted from
 the line width.
 To be able to multiply and subtract in arguments, the \SpecialChar LaTeX
-package 
\series bold
calc
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
calc
\series default
 is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! calc
\end_layout

\end_inset

 must be loaded in the \SpecialChar LaTeX
-preamble with the line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{calc}
\end_layout

\begin_layout Standard
Behind the formula both boxes are closed by entering 
\series bold
}}
\series default
 in \SpecialChar TeX
 mode.
 Here is an example:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxsep 5mm 
\backslash
fboxrule 5mm
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fbox{
\backslash
parbox{
\backslash
linewidth-2
\backslash
fboxsep-2
\backslash
fboxrule}{
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
\int A\,\mathrm{d}x=\frac{\sqrt[5]{B}}{\ln\left(\frac{1}{3}\right)}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}}
\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fboxrule 0.4pt 
\backslash
fboxsep 3pt
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

As a parbox is used as the argument of 
\series bold

\backslash
fbox
\series default
, there is in this case no difference between 
\series bold

\backslash
fbox
\series default
 and 
\series bold

\backslash
boxed
\series default
.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Paragraph boxes are very useful to comment formulas directly.
 To do this, 
\series bold

\backslash
parbox
\series default
 is used in combination with the command 
\series bold

\backslash
tag
\series default
.
 (more about 
\series bold

\backslash
tag
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:User-defined-Numbering"

\end_inset

)
\end_layout

\begin_layout Standard
An example of a formula commented with 
\series bold

\backslash
parbox
\series default
:
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
[5x-7b=3b
\backslash
tag*{
\backslash
parbox{5cm}{
\end_layout

\end_inset

This is a description.
 It is distinctly separated from the formula and multiline.
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}}
\backslash
]
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Such a formula must be inserted completely in \SpecialChar TeX
 mode because \SpecialChar LyX
 does not yet
 support the command 
\series bold

\backslash
parbox
\series default
 in formulas.
 The formula is created with the following command sequence:
\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
[5x-7b=3b
\backslash
tag*
\backslash
{
\backslash
parbox{5cm}{
\series default
 is inserted in \SpecialChar TeX
 mode.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
When the formula style 
\series bold
Indented
\series default
 is used, 
\series bold

\backslash
tag*
\backslash
{
\series default
 can also be replaced by 
\series bold

\backslash
hfill
\series default
.
 (formula styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset

)
\end_layout

\end_inset

 Then the description follows as normal text and finally 
\series bold
}}
\backslash
]
\series default
 is inserted in \SpecialChar TeX
 mode.
 The commands 
\series bold

\backslash
[
\series default
 and 
\series bold

\backslash
]
\series default
 hereby create a displayed formula.
\end_layout

\begin_layout Standard
The advantages of 
\series bold

\backslash
parbox
\series default
 can be seen in this example that was 
\begin_inset Quotes eld
\end_inset

commented
\begin_inset Quotes erd
\end_inset

 using the mathematical textmode:
\begin_inset Formula 
\[
5x-7b=3b\textrm{This is a description. It is not separated from the formula ...}
\]

\end_inset


\end_layout

\begin_layout Section
Operators
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Big Operators
\begin_inset CommandInset label
LatexCommand label
name "subsec:Big-Operators"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators ! big
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Sums
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Integrals
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To be able to use all integral operators listed here, the option 
\family sans
Use esint package automatically
\family default
 must be set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
.
\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="11" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
int
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! I ! 
\backslash
int
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\int$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
oint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\oint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ointctrclockwise
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ointctrclockwise$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ointclockwise
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ointclockwise$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sqint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
fint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
 
\begin_inset Formula $\fint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
landupint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
 
\begin_inset Formula $\landupint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
landdownint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
 
\begin_inset Formula $\landdownint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigcap
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigcap$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigcup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigcup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="11" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sum
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
sum
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sum$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
prod
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! P ! 
\backslash
prod
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\prod$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
coprod
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\coprod$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigodot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigodot$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigotimes
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigotimes$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigoplus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigoplus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigwedge
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigwedge$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigvee
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigvee$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigsqcup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigsqcup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
biguplus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\biguplus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
All big operators can also be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\intop"
\end_inset

.
\end_layout

\begin_layout Standard
The operators are called big because they are bigger than the sometimes
 equal looking binary operators.
 All big operators can have limits as described in the next subsection.
\end_layout

\begin_layout Standard
For all integral operators there is a second version available, ending in
 
\series bold
op
\series default
: 
\series bold

\backslash
intop
\series default
, 
\series bold

\backslash
ointop
\series default
 etc..
 These operators are different from 
\series bold

\backslash
int
\series default
 etc.
\begin_inset space \space{}
\end_inset

in the style the operator limits are displayed, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Operator-Limits"

\end_inset

.
 
\end_layout

\begin_layout Subsubsection*
Advice for Integrals
\end_layout

\begin_layout Standard
The letter 
\emph on
d
\emph default
 in an integral is an operator, that therefore has to be set upright.
 This is done by highlighting the 
\emph on
d
\emph default
 and using the keyboard shortcut 
\begin_inset Info
type  "shortcut"
arg   "font-roman"
\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
Font styles
\series bold
 
\series default
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Styles"

\end_inset


\end_layout

\end_inset

.
 Finally the smallest space is inserted before the 
\emph on
d
\emph default
, as this is usual for operators.
 An example:
\end_layout

\begin_layout Standard
incorrect: 
\begin_inset Formula $\int A(x)dx$
\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout
in
\end_layout

\end_inset

correct: 
\begin_inset Formula $\int A(x)\,\mathrm{d}x$
\end_inset


\end_layout

\begin_layout Standard
For multiple integrals there are the following commands:
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
iint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\iint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
oiint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\oiint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sqiint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqiint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
iiint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\iiint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
iiiint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\iiiint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dotsint
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dotsint$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Subsection
Operator Limits
\begin_inset CommandInset label
LatexCommand label
name "subsec:Operator-Limits"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators ! Limits
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Limits are created by super- and subscripts:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
prod^
\backslash
infty
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset Formula $\to$
\end_inset

_0
\begin_inset Formula $\to$
\end_inset

A(x)
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\prod_{0}^{\infty}A(x)$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
Limits of inline formulas are set right beside the operator.
 Limits in displayed formulas are set above or below the operator, except
 for integral limits.
\end_layout

\begin_layout Standard
To force that the limits are set beside the operator, the cursor is set
 directly behind the operator and the limits type is changed with the menu
 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Change Limits Type
\family default
 to 
\family sans
\series bold
Inline
\family default
\series default
 (shortcut 
\begin_inset Info
type  "shortcut"
arg   "math-limits"
\end_inset

).
 An example:
\end_layout

\begin_layout Standard
The default limits type is this:
\begin_inset Formula 
\[
\sum_{x=0}^{\infty}\frac{1}{x^{2}}
\]

\end_inset

This is how it looks when the limits type was changed to 
\family sans
\series bold
Inline
\family default
\series default
:
\begin_inset Formula 
\[
\sum\nolimits _{x=0}^{\infty}\frac{1}{x^{2}}
\]

\end_inset

For integrals, except those ending with 
\series bold
op
\series default
 like 
\series bold

\backslash
intop
\series default
, 
\series bold

\backslash
ointop
\series default
 etc., the limits are by default set beside the operator.
 But for multiple integrals the limits are often set below the operator.
 In the following example the limits type was therefore set to 
\series bold
Display
\series default
 and so set below the integrals:
\begin_inset Formula 
\begin{equation}
\iiint\limits _{V}X\,\mathrm{d}V=U\label{eq:VolInt}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

To specify conditions for limits, the commands 
\series bold

\backslash
subarray
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
subarray
\end_layout

\end_inset

 and 
\series bold

\backslash
substack
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
substack
\end_layout

\end_inset

 are used.
 To create for example this expression 
\begin_inset Formula 
\begin{equation}
\sum_{\begin{subarray}{c}
0<k<1000\\
\\
k\,\in\,\mathbb{N}
\end{subarray}}^{n}k^{-2}\label{eq:substack}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
the following has to be done:
\begin_inset Newline newline
\end_inset

First the command 
\series bold

\backslash
sum
\series default
^
\series bold
n
\begin_inset space \textvisiblespace{}
\end_inset

_
\series default
 is typed in.
 One is now in a blue box under the summation operator and insert there
 the command 
\series bold

\backslash
subarray
\begin_inset space \textvisiblespace{}
\end_inset


\series default
.
 The blue box is now within a purple box and now several lines can be written
 among each other.
 A new line is created by inserting a line break (
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

).
 When now
\begin_inset Newline newline
\end_inset


\series bold
0<k<1000 Ctrl+Return
\begin_inset Newline newline
\end_inset


\series default
is typed in, a new box appears below for the new line.
\end_layout

\begin_layout Standard
The alignment of the lines can be changed to left aligned with the 
\family sans
table
\family default
 
\family sans
toolbar
\family default
 or the menu 
\family sans
Edit\SpecialChar menuseparator
Rows &Columns
\family default
.
 To get right alignment, 
\series bold

\backslash
hfill
\begin_inset space \textvisiblespace{}
\end_inset


\series default
 is inserted at the beginning of the line.
\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
substack
\series default
 is equivalent to 
\series bold

\backslash
subarray
\series default
 with the difference that the lines are always centered.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Like in formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:substack"

\end_inset

 there can be too much space beside an operator, because the characters
 following the operator are set beside the limits.
 To avoid this the command 
\series bold

\backslash
smashoperator
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
smashoperator
\end_layout

\end_inset

 can be used.
 To activate it, set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
.
 
\series bold

\backslash
smashoperator
\series default
 sets the space besides the operator to 0
\begin_inset space \thinspace{}
\end_inset

pt.
\begin_inset Newline newline
\end_inset

Applied on formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:substack"

\end_inset

, one uses the command
\end_layout

\begin_layout Standard

\series bold

\backslash
smashoperator{
\end_layout

\begin_layout Standard
and inserts the operator with its limits into the braces.
 Behind the brace one continues the formula:
\begin_inset Formula 
\[
\smashoperator{\sum_{\begin{subarray}{c}
0<k<1000\\
\\
k\,\in\,\mathbb{N}
\end{subarray}}^{n}}k^{-2}
\]

\end_inset


\end_layout

\begin_layout Standard
It is possible to set the space of only one side of the operator to 0
\begin_inset space \thinspace{}
\end_inset

pt.
 To do this write either 
\series bold
[l]
\series default
 or 
\series bold
[r]
\series default
 between 
\series bold

\backslash
smashoperator
\series default
 and its brace.
 
\series bold
l
\series default
 stands for the left and 
\series bold
r
\series default
 for the right side of the operator.
 Here is an example of the possible 
\series bold

\backslash
smashoperator
\series default
 forms:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
Y\smashoperator{\sum_{1\le i\le j\le n}^{n=3456}}X_{ij}=Y\smashoperator[l]{\sum_{1\le i\le j\le n}^{n=3456}}X_{ij}=Y\smashoperator[r]{\sum_{1\le i\le j\le n}^{n=3456}}X_{ij}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\end_layout

\begin_layout Standard
When several consecutive operators have limits the typesetting of the limits
 looks often imperfect in the output, see this example:
\begin_inset Formula 
\[
\text{a)}\lim_{n\to\infty}\max_{p\ge n}\quad\text{b)}\lim_{n\to\infty}\max_{p^{2}\ge n}\quad\text{c)}\lim_{n\to\infty}\sup_{p^{2}\ge nK}\quad\text{d)}\limsup_{n\to\infty}\max_{p\ge n}
\]

\end_inset

To improve the typesetting set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
.
 Then insert into your formula the command 
\series bold

\backslash
adjustlimits
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
adjustlimits
\end_layout

\end_inset

 directly before the first operator.
 The example will then look like this:
\begin_inset Formula 
\[
\text{a)}\adjustlimits\lim_{n\to\infty}\max_{p\ge n}\quad\text{b)}\adjustlimits\lim_{n\to\infty}\max_{p^{2}\ge n}\quad\text{c)}\adjustlimits\lim_{n\to\infty}\sup_{p^{2}\ge nK}\quad\text{d)}\adjustlimits\limsup_{n\to\infty}\max_{p\ge n}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

How to use one limit for several operators is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Self-defined-Operators"

\end_inset

.
\end_layout

\begin_layout Subsection
Decoration for Operators
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators ! Decoration
\end_layout

\end_inset


\end_layout

\begin_layout Standard
With the commands 
\series bold

\backslash
overset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
overset
\end_layout

\end_inset

 and 
\series bold

\backslash
underset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
underset
\end_layout

\end_inset

 characters can be placed above or below an operator, respectively.
 With the command 
\series bold

\backslash
sideset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
sideset
\end_layout

\end_inset

 characters can be set before and behind a big operator.
\end_layout

\begin_layout Standard
There are 4
\begin_inset space ~
\end_inset

variants of 
\series bold

\backslash
sideset
\series default
:
\end_layout

\begin_layout Itemize

\series bold

\backslash
sideset
\series default
 is used to set characters at the corners of the operator
\end_layout

\begin_layout Itemize

\series bold

\backslash
sidesetn
\series default
 is used to set characters before and/or behind the operator (this variant
 represents \SpecialChar LaTeX
's original 
\series bold

\backslash
sideset
\series default
 command)
\end_layout

\begin_layout Itemize

\series bold

\backslash
sidesetl
\series default
 is used to set characters at the left corners and/or behind the operator
\end_layout

\begin_layout Itemize

\series bold

\backslash
sidesetr
\series default
 is used to set characters at the right corners and/or before the operator
\end_layout

\begin_layout Standard
For example the command 
\series bold

\backslash
sidesetn
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
sum
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset Formula $\to$
\end_inset

'
\begin_inset Formula $\to$
\end_inset

_k=1
\begin_inset space \textvisiblespace{}
\end_inset


\series default
^
\series bold
n
\series default
 produces:
\begin_inset Formula 
\[
\sideset{}{'}\sum_{k=1}^{n}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note: 
\backslash
sideset
\series default
 can only be used to decorate big operators, binary operators are not allowed.
\end_layout

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
overset
\series default
 and 
\series bold

\backslash
underset
\series default
 can also be used to decorate symbols and characters.
 For example, the command 
\series bold

\backslash
overset
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
maltese
\begin_inset space \textvisiblespace{}
\end_inset


\series default

\begin_inset Formula $\uparrow$
\end_inset


\series bold
a
\series default
 produces:
\begin_inset Formula 
\[
\overset{a}{\maltese}
\]

\end_inset


\end_layout

\begin_layout Subsection
Binary Operators
\begin_inset CommandInset label
LatexCommand label
name "subsec:Binary-Operators"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators ! binary
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Binary operators are surrounded by space when there is a character before
 and after them.
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Tabular
<lyxtabular version="3" rows="13" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
raisebox
\series default
 is only used as spacer.
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
+
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $+$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $-$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
pm
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\pm$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mp
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mp$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cdot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cdot$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
times
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\times$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
div
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\div$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
raisebox{-1.2mm}{
\end_layout

\end_inset

*
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $*$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
star
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\star$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
circ
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\circ$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
diamond
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\diamond$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bullet
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bullet$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="13" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nabla
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nabla$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigtriangledown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigtriangledown$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigtriangleup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigtriangleup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Box
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Box$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cap 
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cap$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dagger
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dagger$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddagger
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddagger$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
wr
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\wr$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigcirc
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigcirc$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
wedge
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\wedge$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vee
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\vee$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="13" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
oplus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\oplus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ominus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ominus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
otimes
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\otimes$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
oslash
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\oslash$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
odot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\odot$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
amalg
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\amalg$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
uplus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\uplus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
setminus
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\setminus$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sqcap
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqcap$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sqcup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sqcup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
triangleleft
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\triangleleft$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
triangleright
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\triangleright$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
All binary operators can also be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\pm"
\end_inset

.
\end_layout

\begin_layout Standard
To typeset the Laplace operator also 
\series bold

\backslash
Delta
\series default
 or 
\series bold

\backslash
nabla
\series default
^
\series bold
2
\series default
 (
\begin_inset Formula $\nabla^{2}$
\end_inset

) can be used instead of 
\series bold

\backslash
bigtriangleup
\series default
 .
\end_layout

\begin_layout Standard
The character 
\family sans
Menu Separator
\family default
 from the menu 
\family sans
Insert\SpecialChar menuseparator
Special Character
\family default
 is the operator 
\series bold

\backslash
triangleright
\series default
.
\end_layout

\begin_layout Subsection
Self-defined Operators
\begin_inset CommandInset label
LatexCommand label
name "subsec:Self-defined-Operators"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Operators ! self-defined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
With the help of the command 
\series bold

\backslash
DeclareMathOperator
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dbinom@
\backslash
DeclareMathOperator
\end_layout

\end_inset

 custom operators can be defined in the \SpecialChar LaTeX
-preamble.
 Its command scheme is:
\end_layout

\begin_layout Standard

\series bold

\backslash
DeclareMathOperator{new command}{display}
\end_layout

\begin_layout Standard
Display can be characters or symbols that define how the operator looks
 in the output.
 To define a big operator a * is set behind the command.
 All self-defined big operators can have limits as described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Operator-Limits"

\end_inset

.
\end_layout

\begin_layout Standard
For example the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
DeclareMathOperator*{
\backslash
Lozenge}{
\backslash
blacklozenge}
\end_layout

\begin_layout Standard
defines the command 
\series bold

\backslash
Lozenge
\series default
, that inserts a big operator consisting of the lozenge symbol from 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Miscellaneous-Symbols"

\end_inset

:
\begin_inset Formula 
\[
\Lozenge_{n=1}^{\infty}
\]

\end_inset

The command for this formula is: 
\series bold

\backslash
Lozenge
\series default
^
\series bold

\backslash
infty
\begin_inset Formula $\to$
\end_inset

_n=1
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

When self-defined operators are not used several times in the document,
 they can also be defined with the commands 
\series bold

\backslash
mathop
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
mathop
\end_layout

\end_inset

 and 
\series bold

\backslash
mathbin
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
mathbin
\end_layout

\end_inset

, which have the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
mathop{display}
\series default
 and 
\series bold

\backslash
mathbin{display}
\end_layout

\begin_layout Standard

\series bold

\backslash
mathop
\series default
 defines big operators, 
\series bold

\backslash
mathbin
\series default
 binary operators.
\end_layout

\begin_layout Standard

\series bold

\backslash
mathop
\series default
 can e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

be used to use one limit for several operators:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
\mathop{\sum\negmedspace\sum}_{i,j=1}^{N}
\]

\end_inset


\end_layout

\begin_layout Standard
The command for the formula above is:
\begin_inset Newline newline
\end_inset


\series bold

\backslash
mathop{
\backslash
sum
\backslash
negmedspace
\backslash
sum
\series default

\begin_inset space \textvisiblespace{}
\end_inset


\series bold

\begin_inset Formula $\to$
\end_inset

^N
\series default

\begin_inset space \textvisiblespace{}
\end_inset


\series bold
_i,j=1
\end_layout

\begin_layout Section
Fonts
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Fonts
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Font Styles
\begin_inset CommandInset label
LatexCommand label
name "subsec:Font-Styles"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Font ! style
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Latin letters in formulas can be set in one of the following font styles:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Shortcut
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathbb
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
ABC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathbb{ABC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathbf
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathbf{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "shortcut"
arg   "font-bold"
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
boldsymbol
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\boldsymbol{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "shortcut"
arg   "font-boldsymbol"
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathcal
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
ABC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathcal{ABC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathfrak
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathfrak{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Shortcut
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathit
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathit{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathrm
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathrm{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "shortcut"
arg   "font-roman"
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathsf
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathsf{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "shortcut"
arg   "font-sans"
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathtt
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
AbC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathtt{AbC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "shortcut"
arg   "font-typewriter"
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mathscr
\series bold

\begin_inset space \textvisiblespace{}
\end_inset


\series default
ABC
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathscr{ABC}$
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
-
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 The styles 
\series bold

\backslash
mathbb
\series default
, 
\series bold

\backslash
mathcal
\series default
 and 
\series bold

\backslash
mathscr
\series default
 can only be used for big letters.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Predefined is the style 
\series bold

\backslash
mathnormal
\series default
.
\end_layout

\begin_layout Standard
The style commands work also for letters in mathematical constructs:
\begin_inset Formula 
\[
\mathfrak{A=\frac{b}{C}}
\]

\end_inset


\end_layout

\begin_layout Standard
Characters in mathematical text don't appear in a math font style but in
 the text font style 
\series bold

\backslash
textrm
\series default
.
 That their style can't be set correctly via the text style dialog is a
 bug in \SpecialChar LyX
.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #4629"
target "https://www.lyx.org/trac/ticket/4629"
literal "false"

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
Instead of the style commands the dialog 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Text Style
\family default
 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\font"
\end_inset

 can be used.
\end_layout

\begin_layout Subsection
Bold Formulas
\begin_inset CommandInset label
LatexCommand label
name "subsec:Bold-Formulas"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! bold
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To make a complete formula bold, the command 
\series bold

\backslash
mathbf
\series default
 from the previous subsection cannot be used, because it doesn't work for
 small Greek letters.
 Furthermore it prints Latin letters always upright, like in the following
 equation:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
\mathbf{\int_{n}^{2}f(\theta)=\Gamma}\qquad\textrm{equation with \textbackslash mathbf}
\]

\end_inset


\end_layout

\begin_layout Standard
To display the formula correctly, the command 
\series bold

\backslash
boldsymbol
\series default
 is used:
\begin_inset Formula 
\[
\boldsymbol{\int_{n}^{2}f(\theta)=\Gamma\qquad\textrm{equation with \textbackslash boldsymbol}}
\]

\end_inset

It is also possible to set the formula in a 
\series bold
boldmath environment
\series default
.
 This environment is created by inserting the command 
\series bold

\backslash
boldmath
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
boldmath
\end_layout

\end_inset

 in \SpecialChar TeX
 mode.
 To end the environment, the command 
\series bold

\backslash
unboldmath
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! U ! 
\backslash
unboldmath
\end_layout

\end_inset

 is inserted in \SpecialChar TeX
 mode.
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
boldmath 
\end_layout

\end_inset


\begin_inset Formula 
\[
\int_{n}^{2}f(\theta)=\Gamma\qquad\textrm{equation in a boldmath environment}
\]

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
unboldmath 
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Colored Formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! colored
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Formulas can be colored like normal text: Highlight a formula or a formula
 part and use the 
\family sans
Text Style
\family default
 dialog.
 Here is a formula in magenta:
\begin_inset Formula 
\[
{\color{magenta}\int A\,\mathrm{d}x=\frac{\sqrt[5]{B}}{\ln\left(\frac{1}{3}\right)}}
\]

\end_inset


\end_layout

\begin_layout Standard
You can also define your own colors as described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Colored-Boxes"

\end_inset

.
 They can be used with the \SpecialChar TeX
 code command 
\series bold

\backslash
textcolor
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
textcolor
\end_layout

\end_inset

 in the scheme
\end_layout

\begin_layout Standard

\series bold

\backslash
textcolor{color}{characters or formula}
\end_layout

\begin_layout Standard
The following example was colored completely dark green and partly red:
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
textcolor{darkgreen}{
\end_layout

\end_inset


\begin_inset Formula 
\[
\int A\,\mathrm{d}x=\frac{{\color{red}\sqrt[5]{B}}}{\ln\left(\frac{1}{3}\right)}
\]

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Due to a bug in \SpecialChar LyX
 only complete formulas can be colored with self-defined
 colors.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #5269"
target "https://www.lyx.org/trac/ticket/5269"
literal "false"

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Font Sizes
\begin_inset CommandInset label
LatexCommand label
name "subsec:Font-Sizes"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Font ! size
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For characters in formulas there are, analog to characters in text, the
 following size commands:
\end_layout

\begin_layout Standard

\series bold

\backslash
Huge
\series default
, 
\series bold

\backslash
huge
\series default
, 
\series bold

\backslash
LARGE
\series default
, 
\series bold

\backslash
Large
\series default
, 
\series bold

\backslash
large
\series default
, 
\series bold

\backslash
normalsize
\series default
, 
\series bold

\backslash
small
\series default
,
\begin_inset Newline newline
\end_inset


\series bold

\backslash
footnotesize
\series default
, 
\series bold

\backslash
scriptsize
\series default
 and 
\series bold

\backslash
tiny
\end_layout

\begin_layout Standard
The size produced by the commands depends on the document font size, which
 corresponds to the command 
\series bold

\backslash
normalsize
\series default
.
 The other commands produce smaller or larger sizes than 
\series bold

\backslash
normalsize
\series default
.
 The font size can however not exceed a certain value.
 Is for example the document font size 12
\begin_inset space \thinspace{}
\end_inset

pt, the command 
\series bold

\backslash
Huge
\series default
 switches to the same size as 
\series bold

\backslash
huge
\series default
.
 
\end_layout

\begin_layout Standard
A size command is inserted in \SpecialChar TeX
 mode before the formula and sets the size
 for all following formula and text characters.
 To switch back to the initial size, the command 
\series bold

\backslash
normalsize
\series default
 is inserted behind the formula in \SpecialChar TeX
 mode.
\end_layout

\begin_layout Standard
Within a formula the size can be changed using the following size commands
 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\style"
\end_inset

:
\end_layout

\begin_layout Standard
\noindent
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
displaystyle
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
displaystyle
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${\displaystyle E_{\mathrm{pot_{1}}}=\frac{K}{l+\frac{m}{n_{2}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
textstyle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${\textstyle E_{\mathrm{pot_{1}}}=\frac{K}{l+\frac{m}{n_{2}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
scriptstyle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${\scriptstyle E_{\mathrm{pot_{1}}}=\frac{K}{l+\frac{m}{n_{2}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
scriptscriptstyle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula ${\scriptscriptstyle E_{\mathrm{pot_{1}}}=\frac{K}{l+\frac{m}{n_{2}}}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
After entering these commands, a blue box appears in which the formula parts
 are inserted.
\end_layout

\begin_layout Standard
There is a further method to change the font size, that though only works
 for symbols or letters in mathematical text.
 To use it, one of the above text size commands is inserted in mathematical
 text.
 All following characters until the end of the mathematical text or until
 another size command will have the selected size.
 Two examples:
\begin_inset VSpace -2mm
\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
huge 
\end_layout

\end_inset


\begin_inset Formula 
\[
A=\frac{B}{c}\cdot\maltese
\]

\end_inset


\begin_inset Formula 
\[
\maltese A\textrm{\Large\maltese\textit{A}}\textrm{\tiny\maltese\textit{A}}
\]

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
normalsize 
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

Before both formulas the command 
\series bold

\backslash
huge
\series default
 was inserted.
 The command for the second formula is:
\begin_inset Newline newline
\end_inset


\series bold

\backslash
maltese
\begin_inset space \textvisiblespace{}
\end_inset

A Alt+M M 
\backslash
Large
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
maltese
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
textit
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset Formula $\to$
\end_inset


\begin_inset Formula $\to$
\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset space \hspace*{}
\length 1cm
\end_inset

Alt+M
\series default
 
\series bold
M 
\backslash
tiny
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
maltese
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
textit
\begin_inset space \textvisiblespace{}
\end_inset

A
\end_layout

\begin_layout Standard
If a symbol cannot be displayed in different sizes, it will always be displayed
 in the default size.
\end_layout

\begin_layout Section
Greek Letters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Greek letters
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Greek letters can also be inserted via the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\alpha"
\end_inset

.
 All international typesetting norms purport that Greek letters in math
 have to be typeset italic/slanted.
 In some languages, like French or Russian, they are nevertheless sometimes
 typeset upright.
\end_layout

\begin_layout Subsection
Small Letters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Greek letters ! small
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="11" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
alpha
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\alpha$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
beta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\beta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
gamma
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\gamma$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
delta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\delta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
epsilon
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\epsilon$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varepsilon
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varepsilon$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
zeta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\zeta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
eta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\eta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
theta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\theta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vartheta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\vartheta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="12" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
iota
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\iota$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
kappa
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\kappa$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varkappa
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varkappa$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lambda
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\lambda$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mu
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mu$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nu
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nu$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
xi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
o
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $o$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
pi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\pi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varpi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varpi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rho
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\rho$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="11" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varrho
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varrho$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sigma
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sigma$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varsigma
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varsigma$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
tau
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\tau$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
upsilon
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\upsilon$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
phi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\phi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varphi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varphi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
chi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\chi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
psi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\psi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
omega
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\omega$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
How to create special upright Greek letters is explained in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Upright-small-Greek"

\end_inset

.
\end_layout

\begin_layout Subsection
Big Letters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Greek letters ! big
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="7" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Gamma
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Gamma$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Delta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Delta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Theta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Theta$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Lambda
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Lambda$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Xi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Xi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Pi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Pi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Sigma
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Sigma$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Upsilon
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Upsilon$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Phi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Phi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Psi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Psi$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Omega
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Omega$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

That the big Greek letters appear upright is caused by a design bug when
 \SpecialChar TeX
 was developed.
 To get correct italic big letters, begin every command with 
\series bold
var
\series default
.
 For example the command 
\series bold

\backslash
varGamma
\series default
 produces 
\begin_inset Formula $\varGamma$
\end_inset

.
 Another way is to load the package 
\series bold
fixmath
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
fixmath
\series default
 is part of the \SpecialChar LaTeX
-package 
\series bold
was
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! was
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset

.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! fixmath
\end_layout

\end_inset

 with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{fixmath}
\end_layout

\begin_layout Standard
Then all big Greek letters in a document will automatically be typeset italic.
\end_layout

\begin_layout Subsection
Bold Letters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Greek letters ! bold
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Greek letters cannot be set with different font styles like Latin letters.
 They can only be made bold with the command 
\series bold

\backslash
boldsymbol
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! B ! 
\backslash
boldsymbol
\end_layout

\end_inset

.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Upsilon
\backslash
boldsymbol
\backslash
Upsilon
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Upsilon\boldsymbol{\Upsilon}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
theta
\backslash
boldsymbol
\backslash
theta
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\theta\boldsymbol{\theta}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Section
Symbols
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
texorpdfstring{
\end_layout

\end_inset


\begin_inset Foot
status collapsed

\begin_layout Plain Layout
A list with all symbols of most of the \SpecialChar LaTeX
-packages can be found in 
\begin_inset CommandInset citation
LatexCommand cite
key "Symbols"
literal "true"

\end_inset

.
\end_layout

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}{}
\end_layout

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\backslash
texorpdfstring is used to avoid that the footnote appears in the PDF-bookmark.
\end_layout

\begin_layout Plain Layout
More about 
\backslash
texorpdfstring is in section 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Formulas-in-Section"

\end_inset

.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Symbols
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Many of the symbols listed in this section can also be inserted via the
 toolbar buttons 
\begin_inset Info
type  "icon"
arg   "math-insert \\nabla"
\end_inset

 and 
\begin_inset Info
type  "icon"
arg   "math-insert \\digamma"
\end_inset

.
\end_layout

\begin_layout Subsection
Mathematical Symbols
\begin_inset CommandInset label
LatexCommand label
name "subsec:Mathematical-Symbols"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Symbols ! mathematical
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
neg
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\neg$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Im
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Im$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Re
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Re$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
aleph
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\aleph$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
partial
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\partial$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
infty
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\infty$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
wp
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\wp$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
imath
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\imath$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
jmath
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\jmath$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
raisebox
\series default
 is only used as spacer.
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
forall
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\forall$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
exists
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\exists$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nexists
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nexists$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
emptyset
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\emptyset$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varnothing
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varnothing$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dag
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\dag$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ddag
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ddag$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
complement
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
raisebox{-0.8mm}{
\end_layout

\end_inset


\begin_inset Formula $\complement$
\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Bbbk
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Bbbk$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
prime
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\prime$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
backprime
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\backprime$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
mho
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mho$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
triangle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\triangle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
angle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\angle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
measuredangle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\measuredangle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sphericalangle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sphericalangle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
top
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\top$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bot$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Miscellaneous Symbols
\begin_inset CommandInset label
LatexCommand label
name "subsec:Miscellaneous-Symbols"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Symbols ! miscellaneous
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\noindent
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
flat
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\flat$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
natural
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\natural$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sharp
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\sharp$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
surd
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\surd$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
checkmark
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\checkmark$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
yen
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\yen$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
pounds
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\pounds$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
$
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\$$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
§
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $§$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hbar
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\hbar$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hslash
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\hslash$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
clubsuit
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\clubsuit$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
spadesuit
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\spadesuit$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bigstar
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bigstar$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
blacklozenge
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\blacklozenge$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
blacktriangle
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\blacktriangle$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
blacktiangledown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\blacktriangledown$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bullet
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bullet$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
diamondsuit
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\diamondsuit$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Diamond
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Diamond$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
heartsuit
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\heartsuit$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
P
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\P$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
copyright
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\copyright$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
circledR
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\circledR$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
maltese
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\maltese$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
diagup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\diagup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
diagdown
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\diagdown$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
Some symbols can be displayed in different sizes, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Sizes"

\end_inset

.
\end_layout

\begin_layout Subsection
The Euro-Symbol €
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Symbols ! Euro-symbol
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout

\backslash
@
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
officialeuro
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
To use the Euro symbol in formulas, the \SpecialChar LaTeX
-package 
\series bold
eurosym
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! eurosym
\end_layout

\end_inset

 must be installed and loaded with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage[gennarrow]{eurosym}
\end_layout

\begin_layout Standard
The Euro symbol can now be inserted with the command 
\series bold

\backslash
euro
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! E ! 
\backslash
euro
\end_layout

\end_inset

.
\end_layout

\begin_layout Standard
The Euro symbol can directly be inserted with the € key in mathematical
 text, without having 
\series bold
eurosym
\series default
 installed.
 When 
\series bold
eurosym
\series default
 is installed, 
\series bold

\backslash
euro
\series default
 can also be inserted in \SpecialChar TeX
 mode.
 The official currency symbol can then be inserted with the command 
\series bold

\backslash
officialeuro
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
officialeuro
\end_layout

\end_inset

, that is only available in \SpecialChar TeX
 mode.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
ifeurosym 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following table will only be displayed when the \SpecialChar LaTeX
-package 
\series bold
eurosym
\series default
 is installed.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
An overview about the different Euro symbols:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="3">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
cmidrule[0.08em]{2-3}
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command 
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Symbol
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
formula
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
euro
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\euro$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
mathematical text
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
€
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mbox{€}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\SpecialChar TeX
 mode
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
officialeuro
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
officialeuro
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset Note Note
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
cmidrule
\series default
 is used here only for table borders.
 See sec.
 
\family sans
Formal Tables
\family default
 of the 
\emph on
EmbeddedObjects
\emph default
 manual for details.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
else 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following will be displayed when the \SpecialChar LaTeX
-package 
\series bold
eurosym
\series default
 is not installed:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
You need to install the \SpecialChar LaTeX
-package 
\series bold
eurosym
\series default
 to see the rest of this subsection in the output.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

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\backslash
fi 
\end_layout

\end_inset


\end_layout

\begin_layout Section
Relations
\begin_inset CommandInset label
LatexCommand label
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\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Relations
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Comparisons|see
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status collapsed

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{
\end_layout

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Relations
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status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
All following relations can also be inserted via the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\leq"
\end_inset

.
\end_layout

\begin_layout Standard
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ll
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preceq
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sqsubseteq
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vdash
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smile
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lhd
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unlhd
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gtrless
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mid
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nmid
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simeq
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approx
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cong
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bowtie
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notin
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perp
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propto
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asymp
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doteq
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circeq
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models
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widehat=
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>
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ge
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gg
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succ
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succeq
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supset
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supseteq
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sqsupseteq
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ni
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dashv
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\backslash
frown
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\backslash
rhd
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unrhd
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\backslash
lessgtr
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\backslash
parallel
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\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
nparallel
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\nparallel$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

The characters 
\series bold

\backslash
lhd
\series default
 and 
\series bold

\backslash
rhd
\series default
 are bigger than the equal looking operators 
\series bold

\backslash
triangleleft
\series default
 and 
\series bold

\backslash
triangleright
\series default
, respectively.
\end_layout

\begin_layout Standard
\SpecialChar LyX
 supports also many special relations.
 Use the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\leqq"
\end_inset

 to see a list of these relations.
\end_layout

\begin_layout Standard
Relations are, in contrary to symbols, always surrounded by space.
\end_layout

\begin_layout Standard
Relations with labels can be created with the command 
\series bold

\backslash
stackrel
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
stackrel
\end_layout

\end_inset

:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A(r)
\backslash
stackrel
\begin_inset space \textvisiblespace{}
\end_inset

r
\backslash
to
\backslash
infty
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset Formula $\downarrow$
\end_inset


\backslash
approx
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A(r)\stackrel{r\to\infty}{\approx}B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Section
Functions
\end_layout

\begin_layout Subsection
Predefined Functions
\begin_inset CommandInset label
LatexCommand label
name "subsec:Predefined-Functions"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Functions ! predefined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In general, variables are set 
\emph on
italic
\emph default
 in mathematical expressions, but not function names, because 
\begin_inset Formula $sin$
\end_inset

 could be misunderstood as 
\begin_inset Formula $s\cdot i\cdot n$
\end_inset

.
 Therefore there are predefined functions which are additionally a bit separated
 from prefactors.
 They are inserted as commands starting with a backslash before their name.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Asin(x)+B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $Asin(x)+B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \quad{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A
\backslash
sin(x)+B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\sin(x)+B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The following functions are predefined:
\end_layout

\begin_layout Standard
\begin_inset VSpace -2mm
\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="9" columns="4">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sin
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sinh
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
arcsin
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sup
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cos
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cosh
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
arccos
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
inf
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
tan
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
tanh
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
arctan
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lim
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
coth
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
arg
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
liminf
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
sec
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
min
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
deg
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
limsup
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
csc
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
max
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
det
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Pr
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ln
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
exp
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dim
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
hom
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lg
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
log
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ker
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
gcd
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
They can also be inserted with the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\functions"
\end_inset

.
\end_layout

\begin_layout Subsection
Self-defined Functions
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Functions ! self-defined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To use a function that is not predefined, like for example the sign function
 sgn(x), there are two possibilities:
\end_layout

\begin_layout Itemize
Define the function by inserting the following line to the \SpecialChar LaTeX
-preamble
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
For more about 
\series bold

\backslash
DeclareMathOperator
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Self-defined-Operators"

\end_inset

.
\end_layout

\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset VSpace -3mm
\end_inset


\begin_inset Newline newline
\end_inset


\series bold

\backslash
DeclareMathOperator{
\backslash
sgn}{sgn}
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! D ! 
\backslash
dbinom@
\backslash
DeclareMathOperator
\end_layout

\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset VSpace -2mm
\end_inset


\begin_inset Newline newline
\end_inset

Now the new defined function can be called with the command 
\series bold

\backslash
sgn
\series default
.
\end_layout

\begin_layout Itemize
Write the formula as usual, mark the formula name, in our example the letters
 
\emph on
sgn
\emph default
, and change it to mathematical text.
 Finally, a space is inserted between prefactor and function.
\end_layout

\begin_layout Standard
The result is the same with both methods as with a predefined function
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
In \SpecialChar LyX
 self-defined functions are displayed red, predefined ones black.
\end_layout

\end_inset

:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A
\backslash
sgn(x)+B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\sgn(x)+B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A
\backslash
,
\begin_inset Formula $\underbrace{\textrm{sgn}}_{\textrm{Alt+M}\,\textrm{M}}$
\end_inset

(x)+B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\,\textrm{sgn}(x)+B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The first method is more suitable when the self-defined function should
 be used several times.
\end_layout

\begin_layout Subsection
Limits
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Limits
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For limits, in addition to the commands 
\series bold

\backslash
lim
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
lim
\end_layout

\end_inset

, 
\series bold

\backslash
liminf
\series default
 and 
\series bold

\backslash
limsup
\series default
 the following functions are defined:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varliminf
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varliminf$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varlimsup
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varlimsup$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varprojlim
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varprojlim$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
varinjlim
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\varinjlim$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

The limit is created by inserting a subscript.
 It is set right beside the function in an inline formula:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="2" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lim_x
\backslash
to
\begin_inset space \textvisiblespace{}
\end_inset

A
\begin_inset space \textvisiblespace{}
\end_inset

x=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\lim_{x\to A}x=B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
In a displayed formula the limit is set below the formula, as usual:
\begin_inset Formula 
\[
\lim_{x\to A}x=B
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset


\end_layout

\begin_layout Standard
How to adjust the typesetting of the limits see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Operator-Limits"

\end_inset

.
\end_layout

\begin_layout Subsection
Modulo-Functions
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Functions ! modulo-
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The modulo-function is special, because it exists in four variants.
 The variants in a displayed formula are:
\begin_inset Formula 
\begin{align*}
\underline{\textrm{Command}\raisebox{-0.9mm}{}} &  & \underline{\textrm{Result}}\\
\mathrm{a\backslash mod\textrm{␣}b} &  & a\mod b\\
\mathrm{a\backslash pmod\textrm{␣}b} &  & a\pmod b\\
\mathrm{a\backslash bmod\textrm{␣}b} &  & a\bmod b\\
\mathrm{a\backslash pod\textrm{␣}b} &  & a\pod b
\end{align*}

\end_inset


\end_layout

\begin_layout Standard
In an inline formula less space is set before the function names for all
 variants.
 By default the modulo-functions take only the first following character
 into account.
 To use more than one character, one has to put them into \SpecialChar TeX
 braces:
\begin_inset Formula 
\begin{align*}
\underline{\textrm{Command}\raisebox{-0.9mm}{}} &  & \underline{\textrm{Result}}\\
\mathrm{a\backslash pod\textrm{␣}bcd} &  & a\pod bcd\\
\mathrm{a\backslash pod\backslash\{bc\to d} &  & a\pod{bc}d
\end{align*}

\end_inset


\end_layout

\begin_layout Section
Special Characters
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Special characters
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The characters ^ and _ would normally create a superscript and subscript,
 respectively.
 To get these characters you have to insert them with a leading 
\backslash
:
\end_layout

\begin_layout Standard
\noindent
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="left" valignment="top" width="0pt">
<column alignment="block" valignment="top">
<row>
<cell alignment="left" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
^
\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\mathcircumflex$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
_
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\_$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Special Characters in Mathematical Text
\end_layout

\begin_layout Standard
The following commands can only be used in mathematical text or in \SpecialChar TeX
 mode:
\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="left" valignment="top" width="0pt">
<column alignment="block" valignment="top">
<row>
<cell alignment="left" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
oe
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{œ}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
OE
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{Œ}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ae
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{æ}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
AE
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{Æ}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
aa
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{å}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
AA
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{Å}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
i
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{ı}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="left" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="left" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\begin_inset Note Note
status collapsed

\begin_layout Plain Layout
The space of 0
\begin_inset space \thinspace{}
\end_inset

mm is used for separation, because otherwise the output will be ¡ and ¿
 respectively.
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
o
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{ø}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
O
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{Ø}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
l
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{ł}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
L
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{Ł}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
!
\begin_inset space \hspace{}
\length 0mm
\end_inset

`
\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{!`}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
?
\begin_inset space \hspace{}
\length 0mm
\end_inset

`
\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{?`}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
j
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\textrm{ȷ}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
The characters 
\begin_inset Formula $\textrm{Å}$
\end_inset

 and 
\begin_inset Formula $\textrm{Ø}$
\end_inset

 can also be inserted via the math toolbar button 
\begin_inset Info
type  "icon"
arg   "math-insert \\digamma"
\end_inset

.
\end_layout

\begin_layout Standard
An exception are the commands 
\series bold
!
\begin_inset space \hspace{}
\length 0mm
\end_inset

`
\series default
 and 
\series bold
?
\begin_inset space \hspace{}
\length 0mm
\end_inset

`
\series default
, because they can be inserted in \SpecialChar LyX
 directly to text.
\end_layout

\begin_layout Subsection
Accents in Text
\begin_inset CommandInset label
LatexCommand label
name "subsec:Accents-in-Text"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Accents ! in text
\end_layout

\end_inset


\end_layout

\begin_layout Standard
With the following commands all letters can be accented.
 The commands must be inserted in \SpecialChar TeX
 mode.
\end_layout

\begin_layout Standard
\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="left" valignment="top" width="0pt">
<column alignment="block" valignment="top">
<row>
<cell alignment="left" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\begin_inset Quotes grd
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
"e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
`e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
`e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
^
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
^e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
=e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
=e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
u
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
u e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
b
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
b e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
t
\begin_inset space \textvisiblespace{}
\end_inset

ee
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
t ee
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="8" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="left" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="left" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
H
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
H e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
'e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
'e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
~e
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Tilde
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
~e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
.e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
.e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
v
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
v e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
d
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
d e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="left" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
c
\begin_inset space \textvisiblespace{}
\end_inset

e
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
c e
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

With the command 
\series bold

\backslash
t
\series default
 also two different characters can be accented.
 The command 
\series bold

\backslash
t
\begin_inset space \textvisiblespace{}
\end_inset

sz
\series default
 creates: 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
t sz
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The accents 
\series bold
`
\series default
 , 
\series bold
'
\series default
 and 
\series bold
^
\series default
 can in combination with vowels directly be inserted with the keyboard without
 using \SpecialChar TeX
 mode.
 The same applies for the tilde
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
This only applies for keyboards where the tilde is defined as accent.
\end_layout

\end_inset

 
\series bold
~
\series default
 in combination with 
\emph on
a
\emph default
 , 
\emph on
n
\emph default
 , or 
\emph on
o
\emph default
.
\end_layout

\begin_layout Standard
The commands 
\series bold

\backslash
b
\series default
 , 
\series bold

\backslash
c
\series default
 , 
\series bold

\backslash
d
\series default
 , 
\series bold

\backslash
H
\series default
 , 
\series bold

\backslash
t
\series default
 , 
\series bold

\backslash
u
\series default
 , 
\series bold

\backslash
v
\series default
 and accents that are inserted directly with the keyboard are also available
 in mathematical text.
 For the other accents there are special math commands to be used in formulas,
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Accents-for-one"

\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Furthermore, with the command 
\series bold

\backslash
textcircled
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
textcircled
\end_layout

\end_inset

 all numbers and letters can be set into a circle, quasi accented with a
 circle, similar to the copyright symbol.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
textcircled{w}
\end_layout

\end_inset
</cell>
<cell multicolumn="1" alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
textcircled{w}
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Large 
\backslash
textcircled{
\backslash
normalsize
\backslash
protect
\backslash
raisebox{-1.5pt}{W}}
\end_layout

\end_inset
</cell>
<cell multicolumn="1" alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
Large 
\backslash
textcircled{
\backslash
normalsize
\backslash
protect
\backslash
raisebox{-1.5pt}W}
\end_layout

\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
One has to take care that the character fits in the circle.
 
\series bold

\backslash
Large
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Sizes"

\end_inset


\end_layout

\end_inset

 specifies thereby the size of the circle.
 With the help of 
\series bold

\backslash
raisebox
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Boxes-without-Frame"

\end_inset


\end_layout

\end_inset

 the character can be centered.
\end_layout

\begin_layout Subsection
Old-style Figures
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Old-style Figures
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Old-style figures (also known as old-style numerals) are created with the
 command 
\series bold

\backslash
oldstylenums
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! O ! 
\backslash
oldstylenums
\end_layout

\end_inset

.
 The command can be used in formulas and in \SpecialChar TeX
 mode.
 The command scheme is:
\end_layout

\begin_layout Standard

\series bold

\backslash
oldstylenums{number}
\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
oldstylenums{0123456789
\series default
 produces: 
\begin_inset Formula $\oldstylenums{0123456789}$
\end_inset


\end_layout

\begin_layout Section
Formula Styles
\begin_inset CommandInset label
LatexCommand label
name "sec:Formula-Styles"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! styles
\end_layout

\end_inset


\end_layout

\begin_layout Itemize
There are two different alignment styles:
\end_layout

\begin_deeper
\begin_layout Description
Centered is the predefined standard.
\end_layout

\begin_layout Description
Indented this can be set using the menu 
\family sans
Document\SpecialChar menuseparator
Settings
\family default
 under 
\family sans
Math
\begin_inset space ~
\end_inset

Options.
\end_layout

\begin_layout Standard
When 
\series bold
Indented
\series default
 is used, the indentation can be adjusted.
 The default value depends on the used document class.
\end_layout

\end_deeper
\begin_layout Itemize
And two different numbering styles that can be set in the menu 
\family sans
Document\SpecialChar menuseparator
Settings
\family default
 under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
:
\end_layout

\begin_deeper
\begin_layout Description
Right is in most cases the default.
\end_layout

\begin_layout Description
Left
\end_layout

\end_deeper
\begin_layout Standard
The chosen styles are used for all displayed formulas of the document.
 When both, centered and indented formulas should be created in a document,
 the style 
\series bold
Centered
\series default
 is used.
 The indented formulas are then set in a flalign environment, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Flalign-Environment"

\end_inset

.
\end_layout

\begin_layout Section
Multiline Formulas
\begin_inset CommandInset label
LatexCommand label
name "sec:Multiline-Formulas"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
General
\end_layout

\begin_layout Standard
In \SpecialChar LyX
 multiline formulas are created by pressing 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

 inside a formula.
 This creates either an 
\series bold
align environment
\series default
 that is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Standard-align-Environment"

\end_inset

 or, when automatically loading the package
\family sans
 AMS math
\family default
 is disabled in the document settings, an 
\series bold
eqnarray environment
\series default
 that is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Eqnarray-Environment"

\end_inset

.
 The align environment is recommended because it provides in any case a
 typographically correct output.
\end_layout

\begin_layout Standard
There are other multiline formula environments that can be created via the
 menu 
\family sans
Insert\SpecialChar menuseparator
Math
\family default
.
 These environments are described in the following sections.
\end_layout

\begin_layout Standard
In all multiline formula environments a new line is created by pressing
 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

.
 To add or delete lines, the math toolbar buttons 
\begin_inset Info
type  "icon"
arg   "tabular-feature append-row"
\end_inset

 or 
\begin_inset Info
type  "icon"
arg   "tabular-feature delete-row"
\end_inset

, respectively, or the menu 
\family sans
Edit\SpecialChar menuseparator
Rows & Columns
\family default
 can be used.
\end_layout

\begin_layout Subsubsection
Line Separation
\begin_inset CommandInset label
LatexCommand label
name "subsec:Line-Separation"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! Line separation
\end_layout

\end_inset


\end_layout

\begin_layout Standard
There is sometimes not enough space in multiline formulas between the lines:
\begin_inset Formula 
\begin{eqnarray*}
B^{2}(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2})+4x_{0}^{2}x^{2}+4x_{0}xD & = & \textrm{-}4x^{2}B^{2}+4x_{0}xB^{2}\\
4x^{2}\left(B^{2}+x_{0}^{2}\right)+4x_{0}x\left(D-B^{2}\right)+B^{2}\left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}\right) & = & 0
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Standard
In \SpecialChar LaTeX
 additional line space is specified as optional argument of the new line
 command.
 This is not yet possible in \SpecialChar LyX

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
see 
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #1505"
target "https://www.lyx.org/trac/ticket/1505"
literal "false"

\end_inset


\end_layout

\end_inset

, therefore the whole formula must be inserted in \SpecialChar TeX
 mode.
 To add in our example space, the command 
\series bold

\backslash

\backslash
[3mm]
\series default
 is inserted at the end of the first line.
 One gets: 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
begin{eqnarray*}
\end_layout

\begin_layout Plain Layout

B^{2}(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2})+4x_{0}^{2}x^{2}+4x_{0}xD &
 = & 
\backslash
textrm{-}4x^{2}B^{2}+4x_{0}xB^{2}
\backslash

\backslash
[3mm]
\end_layout

\begin_layout Plain Layout

4x^{2}
\backslash
left(B^{2}+x_{0}^{2}
\backslash
right)+4x_{0}x
\backslash
left(D-B^{2}
\backslash
right)+B^{2}
\backslash
left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}
\backslash
right) & = & 0
\end_layout

\begin_layout Plain Layout


\backslash
end{eqnarray*}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

To set the line separation for all lines in a formula, the length 
\series bold

\backslash
jot
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! J ! 
\backslash
jot
\end_layout

\end_inset

 is changed.
 The definition is: 
\begin_inset Formula $\mbox{line separation}=\mathrm{6\,pt+\backslash jot}$
\end_inset

.
 Predefined for 
\series bold

\backslash
jot
\series default
 is the value 3
\begin_inset space \thinspace{}
\end_inset

pt.
 To create 3
\begin_inset space \thinspace{}
\end_inset

mm additional line separation as in the previous example, the command
\end_layout

\begin_layout Standard

\series bold

\backslash
setlength{
\backslash
jot}{3mm+3pt}
\end_layout

\begin_layout Standard
is inserted in \SpecialChar TeX
 mode before the formula.
 This requires that the \SpecialChar LaTeX
-package 
\series bold
calc
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
calc
\series default
 is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! calc
\end_layout

\end_inset

 was loaded in \SpecialChar LaTeX
-preamble with the line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{calc}
\end_layout

\begin_layout Standard
One gets: 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
jot}{3mm+3pt}
\end_layout

\end_inset


\begin_inset Formula 
\begin{eqnarray*}
B^{2}(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2})+4x_{0}^{2}x^{2}+4x_{0}xD & = & \textrm{-}4x^{2}B^{2}+4x_{0}xB^{2}\\
4x^{2}\left(B^{2}+x_{0}^{2}\right)+4x_{0}x\left(D-B^{2}\right)+B^{2}\left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}\right) & = & 0
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
jot}{3pt}
\end_layout

\end_inset

 To get back to the predefined distance, 
\series bold

\backslash
jot
\series default
 is set to the value 3
\begin_inset space \thinspace{}
\end_inset

pt.
\end_layout

\begin_layout Subsubsection
Column Separation
\begin_inset CommandInset label
LatexCommand label
name "subsec:Column-Separation"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! Column separation
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Multiline formulas form a matrix.
 A formula in the eqnarray environment is for example a matrix with three
 columns.
 By changing the column separation in this environment, the space beside
 the relation sign can be changed.
\end_layout

\begin_layout Standard
The column separation is specified with the length 
\series bold

\backslash
arraycolsep
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
arraycolsep
\end_layout

\end_inset

 according to:
\begin_inset Newline newline
\end_inset

column separation = 2
\begin_inset space \thinspace{}
\end_inset


\series bold

\backslash
arraycolsep
\series default

\begin_inset Newline newline
\end_inset

Thus, the command
\end_layout

\begin_layout Standard

\series bold

\backslash
setlength{
\backslash
arraycolsep}{1cm}
\end_layout

\begin_layout Standard
inserted in \SpecialChar TeX
 mode, sets for all following formulas a column separation of
 2
\begin_inset space \thinspace{}
\end_inset

cm.
 To get back to the predefined distance, 
\series bold

\backslash
arraycolsep
\series default
 is set to 5
\begin_inset space \thinspace{}
\end_inset

pt.
\end_layout

\begin_layout Standard
A formula with 2
\begin_inset space \thinspace{}
\end_inset

cm column separation:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
arraycolsep}{1cm}
\end_layout

\end_inset


\begin_inset Formula 
\begin{eqnarray*}
A & = & B\\
C & \ne & A
\end{eqnarray*}

\end_inset

A formula with the predefined column separation for matrices of 10
\begin_inset space \thinspace{}
\end_inset

pt:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
arraycolsep}{5pt}
\end_layout

\end_inset


\begin_inset Formula 
\begin{eqnarray*}
A & = & B\\
C & \ne & A
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Subsubsection
Long Formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! long
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Long formulas can be typeset using these methods:
\end_layout

\begin_layout Itemize
When one side of the equation is much shorter than the line width, this
 one is chosen for the left side and the right side is typeset over two
 lines:
\begin_inset Formula 
\begin{eqnarray}
H & = & W_{SB}+W_{mv}+W_{D}-\frac{\hbar^{2}}{2m_{0}}\Delta-\frac{\hbar^{2}}{2m_{1}}\Delta_{1}-\frac{\hbar^{2}}{2m_{2}}\Delta_{2}-\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{r}-\mathbf{R}_{1}|}\nonumber \\
 &  & -\hspace{3pt}\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{r}-\mathbf{R}_{2}|}+\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{R}_{1}-\mathbf{R}_{2}|}\label{eq:shortlong}
\end{eqnarray}

\end_inset

The minus sign at the beginning of the second line does normally not appear
 as an operator because it is the first character of the line.
 Thus it would not be surrounded by space and could not be distinguished
 from the fraction bar.
 To avoid this, 3
\begin_inset space \thinspace{}
\end_inset

pt space was inserted behind the minus sign with the command 
\series bold

\backslash
hspace
\series default
.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
for more about 
\series bold

\backslash
hspace
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Variable-Space"

\end_inset


\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! H ! 
\backslash
hspace
\end_layout

\end_inset


\end_layout

\begin_layout Itemize
When both sides of the equation are too long, the command 
\series bold

\backslash
lefteqn
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
lefteqn
\end_layout

\end_inset

 is used.
 It is inserted in the first column of the first line and causes all further
 insertions to overwrite the following columns:
\begin_inset Formula 
\begin{eqnarray}
\lefteqn{4x^{2}\left(B^{2}+x_{0}^{2}\right)+4x_{0}x\left(D-B^{2}\right)+B^{2}\left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}\right)+D^{2}}\nonumber \\
 &  & -\hspace{3pt}B^{2}-2B\sqrt{r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}}+r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}\nonumber \\
 &  & =B^{2}+2\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)+\frac{\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)^{2}}{B^{2}}\label{eq:lefteqn}
\end{eqnarray}

\end_inset

After the insertion of 
\series bold

\backslash
lefteqn
\series default
, the cursor is in a purple box that is a bit shifted to the left from the
 blue one.
 In this the formula is inserted.
\begin_inset Newline newline
\end_inset

The content of the further lines is inserted to the second or another formula
 column.
 The greater the column number where it was inserted, the larger the indentation.
\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset Note Greyedout
status open

\begin_layout Plain Layout
Note the following when using 
\series bold

\backslash
lefteqn
\series default
:
\end_layout

\begin_layout Itemize
The formula doesn't use the full page width.
 When e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

the term 
\begin_inset Formula $-B^{2}$
\end_inset

 is added to the first line in the above example, it would have been outside
 the page margin.
 To better use the width, negative space can be inserted at the beginning
 of the first line.
\end_layout

\begin_layout Itemize
Due to a bug in \SpecialChar LyX
 the cursor cannot be set with the mouse into the first
 line.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #1429"
target "https://www.lyx.org/trac/ticket/1429"
literal "false"

\end_inset


\end_layout

\end_inset

 One can only set the cursor at the beginning of the line and move it with
 the arrow keys.
\end_layout

\end_inset


\end_layout

\begin_layout Itemize
Other methods to set long formulas are offered by the environments described
 in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Multline-Environment"

\end_inset

 and 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Multiline-Formula-Parts"

\end_inset

.
\end_layout

\begin_layout Subsubsection
Multiline Fractions
\begin_inset CommandInset label
LatexCommand label
name "subsec:Multiline-Fractions"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Fractions ! multiline
\end_layout

\end_inset


\end_layout

\begin_layout Standard
There are cases where the denominator and/or the numerator of a fraction
 is so long that the fraction does not fit into one line.
 It is then necessary to add a line break within the fraction.
 This can be done using the command 
\series bold

\backslash
splitfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
splitfrac
\end_layout

\end_inset

.
 To activate it, set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
.
 
\series bold

\backslash
splitfrac
\series default
 has the scheme
\end_layout

\begin_layout Standard

\series bold

\backslash
splitfrac{first line}{second line}
\end_layout

\begin_layout Standard
and is used as denominator and/or numerator:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
a=\frac{\splitfrac{xy+xy+xy+xy+xy}{+wy+wy+wy+wy}}{z}\ne\frac{\splitdfrac{xy+\frac{xy}{z}+xy+xy+xy}{+xy+xy+xy+xy}}{z}
\]

\end_inset

The command for the first numerator above is:
\end_layout

\begin_layout Standard

\series bold

\backslash
splitfrac{xy+xy+xy+xy+xy
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
{+wy+wy+wy+wy
\end_layout

\begin_layout Subsubsection
Multiline Brackets
\begin_inset CommandInset label
LatexCommand label
name "subsec:Multiline-Brackets"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Brackets ! for multiline expressions
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For brackets spanning multiple lines the following problem occurs:
\begin_inset Formula 
\begin{eqnarray*}
A & = & \sin(x)\left[\prod_{R=1}^{\infty}\frac{1}{R}+\cdots\right.\\
 &  & \left.\cdots+B-D\right]
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Standard
The closing bracket is smaller than the opening bracket because brackets
 with variable size may not span multiple lines.
\end_layout

\begin_layout Standard
To set the bracket size for the second line correctly, the first line is
 ended with 
\series bold

\backslash
right.
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
right
\end_layout

\end_inset

 and the second line with 
\series bold

\backslash
left.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
for more about 
\series bold

\backslash
left
\series default
 and 
\series bold

\backslash
right
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Automatic-Bracket-Size"

\end_inset


\end_layout

\end_inset


\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! L ! 
\backslash
left
\end_layout

\end_inset

.
 After 
\series bold

\backslash
left.

\series default
 the command 
\series bold

\backslash
vphantom
\series default

\begin_inset space \textvisiblespace{}
\end_inset


\series bold

\backslash
prod
\series default
^
\begin_inset space \textvisiblespace{}
\end_inset


\series bold

\backslash
infty
\series default

\begin_inset space \textvisiblespace{}
\end_inset


\series bold

\begin_inset Formula $\downarrow$
\end_inset

_R=1}
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! V ! 
\backslash
vphantom
\end_layout

\end_inset

 is inserted, because the multiplication operator with its limits is the
 largest symbol in the first line and this should be the size for the bracket
 in the second line.
\end_layout

\begin_layout Standard
The result is this:
\begin_inset Formula 
\begin{eqnarray*}
A & = & \sin(x)\left[\prod_{R=1}^{\infty}\frac{1}{R}+\cdots\right.\\
 &  & \left.\vphantom{\prod_{R=1}^{\infty}}\cdots+B-D\right]
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Subsection
Align Environments
\end_layout

\begin_layout Standard
Align environments can be used for every kind of multiline formulas.
 They are especially useful to set several formulas side by side.
\end_layout

\begin_layout Standard
Align environments consist of columns.
 The odd columns are right aligned, the even ones left aligned.
 Every line in an Align environment can be numbered.
\end_layout

\begin_layout Standard
Align environments are created via the menu 
\family sans
Insert\SpecialChar menuseparator
Math
\family default
.
 With the menu 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Change Formula Type
\family default
 already existing formulas can be converted to Align environments.
\end_layout

\begin_layout Standard
To add or delete columns, the math toolbar buttons 
\begin_inset Info
type  "icon"
arg   "tabular-feature append-column"
\end_inset

 or 
\begin_inset Info
type  "icon"
arg   "tabular-feature delete-column"
\end_inset

, respectively, or the menu 
\family sans
Edit\SpecialChar menuseparator
Rows & Columns
\family default
 can be used.
\end_layout

\begin_layout Subsubsection
Standard align Environment
\begin_inset CommandInset label
LatexCommand label
name "subsec:Standard-align-Environment"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! align environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
This Align environment is created by pressing 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

 in a formula or by the menu 
\family sans
Insert\SpecialChar menuseparator
Math\SpecialChar menuseparator
AMS align Environment
\family default
.
\end_layout

\begin_layout Standard
An example for two formulas set side by side, that are created with a four
 column align environment:
\begin_inset Formula 
\begin{align*}
A & =\sin(B) & C & =D\\
C & \ne A & B & \ne D
\end{align*}

\end_inset

As it can be seen, the formulas in this environment are placed so as if
 there would be a 
\series bold

\backslash
hfill
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
more about 
\series bold

\backslash
hfill
\series default
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Variable-Space"

\end_inset


\end_layout

\end_inset


\series default
 before the first and after every even column.
 When the formula style 
\series bold
Indented
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
formula styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset


\end_layout

\end_inset


\series default
 is used, the formula is set without the 
\series bold

\backslash
hfill
\series default
 before the first column.
\end_layout

\begin_layout Subsubsection
Alignat Environment
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! alignat environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The alignat environment has no predefined column separation.
 It can be inserted manually with the spaces that are described 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Space"

\end_inset

.
\end_layout

\begin_layout Standard
The above example in the alignat environment where 1
\begin_inset space \thinspace{}
\end_inset

cm space was inserted at the beginning of the second formula:
\begin_inset Formula 
\begin{alignat*}{2}
A & =\sin(B) & \hspace{1cm}C & =D\\
C & \ne A & B & \ne D
\end{alignat*}

\end_inset

Because the column separation can be set separately for every column, this
 environment is especially suitable to set three and more formulas side
 by side.
\end_layout

\begin_layout Subsubsection
Flalign Environment
\begin_inset CommandInset label
LatexCommand label
name "subsec:Flalign-Environment"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! flalign environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In this environment the first two columns are always set as much as possible
 to the left and the last two ones to the right.
 An example:
\begin_inset Formula 
\begin{flalign*}
A & =1 & B & =2 & C & =3\\
X & =\textrm{-}1 & Y & =\textrm{-}2 & Z & =4
\end{flalign*}

\end_inset


\end_layout

\begin_layout Standard
By creating a flalign environment with an odd number of columns where an
 empty \SpecialChar TeX
 brace is inserted to the last column, several formulas in a document
 can be set to the left, although the formula style 
\series bold
Centered
\series default
 is used.
 As example the indented formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:VolInt"

\end_inset

:
\begin_inset Formula 
\begin{flalign}
\hspace{30pt}\iiint\limits _{V}X\,\mathrm{d}V & =U & {}
\end{flalign}

\end_inset

The first two columns contain the formula.
 To indent it as with the formula style 
\series bold
Indented
\series default
, 30
\begin_inset space \thinspace{}
\end_inset

pt space was inserted at the beginning of the first column.
\end_layout

\begin_layout Subsection
Eqnarray Environment
\begin_inset CommandInset label
LatexCommand label
name "subsec:Eqnarray-Environment"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! eqnarray environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
When this environment has been created, three blue boxes appear.
 The content of the first box is right aligned, the content of the last
 one left aligned.
 The content of the middle box appears centered and a bit smaller, because
 it is designed to insert there only relation characters.
\begin_inset Formula 
\begin{eqnarray*}
\frac{ABC}{D} & \frac{ABC}{D} & \frac{ABC}{D}\\
AB & AB & AB\\
A & = & A
\end{eqnarray*}

\end_inset


\end_layout

\begin_layout Subsection
Gather Environment
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! gather environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
This environment consists of only one centered column.
 Every line can be numbered.
\begin_inset Formula 
\begin{gather}
A=1\\
X=\textrm{-}1
\end{gather}

\end_inset


\end_layout

\begin_layout Subsection
Multline Environment
\begin_inset CommandInset label
LatexCommand label
name "subsec:Multline-Environment"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! multline environment
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The multline environment consists, like the gather environment, of only
 one column.
 But the first line is left aligned, the last one right aligned.
 All other lines are centered.
 Therefore this environment is suitable for long formulas.
 As example formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:lefteqn"

\end_inset

 in the multline environment:
\begin_inset Formula 
\begin{multline}
4x^{2}\left(B^{2}+x_{0}^{2}\right)+4x_{0}x\left(D-B^{2}\right)+B^{2}\left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}\right)+D^{2}\\
-B^{2}-2B\sqrt{r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}}+r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}\\
=B^{2}+2\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)+\frac{\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)^{2}}{B^{2}}
\end{multline}

\end_inset


\end_layout

\begin_layout Standard
In the output only the last (first) line of a multline environment appears
 numbered when the document numbering is right (left).
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
numbering styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
With the commands 
\series bold

\backslash
shoveright
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
shoveright
\end_layout

\end_inset

 and 
\series bold

\backslash
shoveleft
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
shoveleft
\end_layout

\end_inset

 a centered line can be right or left aligned, respectively.
 The commands are used as follows:
\end_layout

\begin_layout Standard

\series bold

\backslash
shoveright{line content}
\series default
 and 
\series bold

\backslash
shoveleft{line content}
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

The length 
\series bold

\backslash
multlinegap
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! M ! 
\backslash
multlinegap
\end_layout

\end_inset

 specifies the distance of the first line from the left page margin.
 Predefined is the length 0
\begin_inset space \thinspace{}
\end_inset

pt.
\end_layout

\begin_layout Standard
As example the above formula where the command
\end_layout

\begin_layout Standard

\series bold

\backslash
setlength{
\backslash
multlinegap}{2cm}
\end_layout

\begin_layout Standard
was inserted in \SpecialChar TeX
 mode before:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
multlinegap}{2cm}
\end_layout

\end_inset


\begin_inset Formula 
\begin{multline}
4x^{2}\left(B^{2}+x_{0}^{2}\right)+4x_{0}x\left(D-B^{2}\right)+B^{2}\left(B^{2}-2r_{g}^{2}+2x_{0}^{2}-2r_{k}^{2}\right)+D^{2}\\
\shoveleft{-B^{2}-2B\sqrt{r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}}+r_{g}^{2}-x^{2}+2x_{0}x-x_{0}^{2}}\\
=B^{2}+2\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)+\frac{\left(r_{g}^{2}+2x_{0}x-x_{0}^{2}-r_{k}^{2}\right)^{2}}{B^{2}}
\end{multline}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
setlength{
\backslash
multlinegap}{0pt}
\end_layout

\end_inset

The second line was left aligned using 
\series bold

\backslash
shoveleft
\series default
.
\end_layout

\begin_layout Subsection
Multiline Formula Parts
\begin_inset CommandInset label
LatexCommand label
name "subsec:Multiline-Formula-Parts"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! formula parts
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To display only parts of a formula with multiple lines, one of the following
 environments is used: 
\series bold
aligned
\series default
, 
\series bold
alignedat
\series default
, 
\series bold
gathered
\series default
 or 
\series bold
split
\series default
.
 They can be inserted via the menu 
\family sans
Insert\SpecialChar menuseparator
Math
\family default
 or by using the commands described in this section.
\end_layout

\begin_layout Standard
The first three have the same properties as the corresponding multiline
 formula environments, but it is possible to set further formula parts beside
 them.
 An example:
\begin_inset Formula 
\[
\left.\begin{aligned}\Delta x\Delta p & \ge\frac{\hbar}{2}\\
\Delta E\Delta t & \ge\frac{\hbar}{2}
\end{aligned}
\right\} \textrm{Uncertainty relations}
\]

\end_inset


\end_layout

\begin_layout Standard
To get this formula, a displayed formula is created where the command 
\series bold

\backslash
aligned
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
aligned
\end_layout

\end_inset

 is inserted.
 A purple box appears around the blue formula box where now columns and
 lines can be added.
 Outside the multiline environment other formula parts can be set, like
 the brace.
\end_layout

\begin_layout Standard
The aligned environment is also suitable for long formulas whose lines are
 horizontally aligned.
 Using aligned in a displayed formula has the advantage that the formula
 number is vertically centered behind the lines.
 As example formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:shortlong"

\end_inset

 in the aligned environment:
\begin_inset Formula 
\begin{equation}
\begin{aligned}H=\; & W_{SB}+W_{mv}+W_{D}-\frac{\hbar^{2}}{2m_{0}}\Delta-\frac{\hbar^{2}}{2m_{1}}\Delta_{1}-\frac{\hbar^{2}}{2m_{2}}\Delta_{2}-\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{r}-\mathbf{R}_{1}|}\\
 & -\hspace{3pt}\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{r}-\mathbf{R}_{2}|}+\frac{e^{2}}{4\pi\varepsilon_{0}|\mathbf{R}_{1}-\mathbf{R}_{2}|}
\end{aligned}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
To use the environments 
\series bold
alignedat
\series default
, 
\series bold
gathered
\series default
, or 
\series bold
split
\series default
, the command 
\series bold

\backslash
alignedat
\series default
,
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
alignedat
\end_layout

\end_inset

 
\series bold

\backslash
gathered
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! G ! 
\backslash
gathered
\end_layout

\end_inset

, or 
\series bold

\backslash
split
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
split
\end_layout

\end_inset

 are inserted, respectively.
 The split environment has the same properties as the aligned environment
 but it can only have two columns.
\end_layout

\begin_layout Subsection
Text in multiline Formulas
\begin_inset CommandInset label
LatexCommand label
name "subsec:Text-in-multiline"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Text ! in formulas
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! multiline ! text
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In the Align environments, and the multline and gather environment, text
 can be inserted that will appear in a separate line and doesn't affect
 the column alignment.
 To do this, the command 
\series bold

\backslash
intertext
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! I ! 
\backslash
intertext
\end_layout

\end_inset

 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
intertext{text}
\end_layout

\begin_layout Standard
The text should not be longer than a line because it cannot be hyphenated.
 As \SpecialChar LyX
 doesn't yet support 
\series bold

\backslash
intertext
\series default
 directly, the text is written as mathematical text.
 
\series bold

\backslash
intertext
\series default
 must hereby be at the beginning of a line and appears in the output above
 this line.
 An example where the text was inserted at the beginning of the second line:
\begin_inset Formula 
\begin{align}
I & =a\sqrt{2}\int_{0}^{2\pi}\sqrt{1+\cos(\phi)}\;\mathrm{d}\phi\\
\intertext{\text{integrand is symmetric to \ensuremath{\phi=\pi}, therefore}} & =2a\sqrt{2}\int_{0}^{\pi}\sqrt{1+\cos(\phi)}\;\mathrm{d}\phi
\end{align}

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
intertext
\series default
 always creates some vertical space between the text and the formula lines.
 To avoid this space, set in the document settings under 
\family sans
Math
\begin_inset space ~
\end_inset

Options
\family default
 for the package 
\series bold
mathtools
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mathtools
\end_layout

\end_inset

 the option 
\family sans
Load
\begin_inset space ~
\end_inset

always
\family default
.
 Then you can use the command 
\series bold

\backslash
shortintertext
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! S ! 
\backslash
shortintertext
\end_layout

\end_inset

 instead of 
\series bold

\backslash
intertext
\series default
:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\begin{align}
I & =a\sqrt{2}\int_{0}^{2\pi}\sqrt{1+\cos(\phi)}\;\mathrm{d}\phi\\
\shortintertext{\text{integrand is symmetric to \ensuremath{\phi=\pi}, therefore}} & =2a\sqrt{2}\int_{0}^{\pi}\sqrt{1+\cos(\phi)}\;\mathrm{d}\phi
\end{align}

\end_inset


\end_layout

\begin_layout Section
Formula Numbering
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! numbering|see
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

{
\end_layout

\end_inset

Formula numbering
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}
\end_layout

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Subsection
General
\end_layout

\begin_layout Standard
Numbered formulas can be created with the menu 
\family sans
Insert\SpecialChar menuseparator
Math\SpecialChar menuseparator
Numbered
\begin_inset space ~
\end_inset

Formula
\family default
 (shortcut 
\family sans
Ctrl+Alt
\begin_inset space ~
\end_inset

N
\family default
).
 Existing formulas can be numbered with the menu 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Toggle
\begin_inset space ~
\end_inset

Numbering
\family default
 (shortcut 
\begin_inset Info
type  "shortcut"
arg   "math-number-toggle"
\end_inset

).
 The formula number is displayed in \SpecialChar LyX
 behind the formula as a number sign
 in parentheses.
 The number sign is replaced in the output by the formula number.
\end_layout

\begin_layout Standard
When numbering is turned on in multiline formulas, all lines will be numbered.
 But the numbering can be controlled with the menu 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Toggle
\begin_inset space ~
\end_inset

Numbering
\begin_inset space ~
\end_inset

of
\begin_inset space ~
\end_inset

Line
\family default
 (shortcut 
\begin_inset Info
type  "shortcut"
arg   "math-number-line-toggle"
\end_inset

) for every line.
\end_layout

\begin_layout Standard
Except for inline formulas, all formulas can be numbered with two different
 styles, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset

.
\end_layout

\begin_layout Subsection
Cross-References
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Cross-references ! to formulas
\end_layout

\end_inset


\end_layout

\begin_layout Standard
All labeled formulas can be cross-referenced.
 A label is added by the menu 
\family sans
Insert\SpecialChar menuseparator
Label
\family default
 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "label-insert"
\end_inset

.
 The cursor must hereby be inside a displayed formula.
 Alternatively you can right-click on the formula and choose 
\family sans
Equation Label
\family default
.
 A dialog pops up displaying the prefix 
\series bold
eq:
\series default
 in a text field.
 The label is inserted there behind the prefix.
 The predefined prefix means 
\begin_inset Quotes eld
\end_inset

equation
\begin_inset Quotes erd
\end_inset

 and makes it easier to find labels in large documents because it marks
 it as formula label to divide it from e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

section labels.
 To change a label, the menu 
\family sans
Insert\SpecialChar menuseparator
Label
\family default
 is used again or you right-click on a formula and then on 
\family sans
Equation Label
\family default
.
\end_layout

\begin_layout Standard
The name of the label is displayed in \SpecialChar LyX
 within two parentheses behind formula.
 A formula with a label is always numbered.
\end_layout

\begin_layout Standard
Cross-references are inserted via the menu 
\family sans
Insert\SpecialChar menuseparator
Cross-Reference
\family default
 or with the toolbar button 
\begin_inset Info
type  "icon"
arg   "dialog-show-new-inset ref"
\end_inset

.
 A formula cross-reference appears in the output as formula number.
 When in the cross-reference dialog window the format 
\series bold
(<reference>)
\series default
 is chosen, the cross-reference appears in the output as formula number
 in parentheses.
\begin_inset Newline newline
\end_inset

By right-clicking on a cross-reference in \SpecialChar LyX
, one jumps to the formula that
 is referenced.
\end_layout

\begin_layout Standard
Here are as examples cross-references to formulas of the following subsections:
\begin_inset Note Note
status open

\begin_layout Plain Layout
Note the different cross-reference types.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The equations 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:tag"

\end_inset

 and 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:c"

\end_inset

 are equivalent.
 In (
\begin_inset CommandInset ref
LatexCommand ref
reference "eq:Lat"

\end_inset

) big Latin letters are used for the numbering in contrary to (
\begin_inset CommandInset ref
LatexCommand ref
reference "eq:Rom"

\end_inset

).
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

When the argument of 
\series bold

\backslash
tag
\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
tag
\series default
 is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:User-defined-Numbering"

\end_inset

.
\end_layout

\end_inset


\series default
 contains a box like in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Paragraph-Boxes"

\end_inset

, the formula cannot be referenced.
\end_layout

\begin_layout Subsection
Subnumbering
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering ! subnumbering
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Formulas can be numbered as subequations.
 To activate this feature, add the module 
\family sans
Subequations
\family default
 to the document in the menu 
\family sans
Document\SpecialChar menuseparator
Settings\SpecialChar menuseparator
Modules
\family default
.
 To insert subequations use the menu 
\family sans
Insert\SpecialChar menuseparator
Custom Insets\SpecialChar menuseparator
Subequations
\family default
.
\end_layout

\begin_layout Standard
The equations to be subnumbered are put into the 
\family sans
Subequations
\family default
 inset.
 An example:
\begin_inset Formula 
\begin{equation}
A=C-B
\end{equation}

\end_inset


\begin_inset VSpace -5mm
\end_inset


\begin_inset Flex Subequations
status open

\begin_layout Plain Layout
\begin_inset Formula 
\begin{equation}
B=C-A\label{eq:b}
\end{equation}

\end_inset


\begin_inset Formula 
\begin{equation}
C=A+B\label{eq:c}
\end{equation}

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
Every formula in the 
\family sans
Subequations
\family default
 inset will be subnumbered with a, b, c, \SpecialChar ldots
 in the output.
 For multiline formulas every line will be subnumbered.
\end_layout

\begin_layout Standard
Referencing subequations work like for normal equations: 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:b"

\end_inset

, 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:c"

\end_inset

.
 If you want to reference the subequations collectively, insert a label
 as first thing in the 
\family sans
Subequations
\family default
 inset.
 Formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:Here-is-an"
plural "false"
caps "false"
noprefix "false"

\end_inset

 is an example.
\end_layout

\begin_layout Standard
By inserting subequations vertical space is added before it.
 To remove this, insert -5
\begin_inset space \thinspace{}
\end_inset

mm vertical space right before the 
\family sans
Subequations
\family default
 inset.
 If the formula style 
\series bold
Indented
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
formula styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset


\end_layout

\end_inset


\series default
 is used, insert -7
\begin_inset space \thinspace{}
\end_inset

mm space instead.
\end_layout

\begin_layout Standard
To get another subnumber instead of small Latin letters, insert this command
 as \SpecialChar TeX
 code before the equations in the 
\family sans
Subequations
\family default
 inset:
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
theequation}{
\backslash
theparentequation -
\backslash
roman{equation}}
\end_layout

\begin_layout Standard

\series bold

\backslash
theparentequation
\series default
 creates hereby the parent number and 
\series bold

\backslash
roman{equation}
\series default
 adds a small Roman number as subnumber.
 For more information about the customization of the numbering, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Numbering-with-Roman"

\end_inset

.
\end_layout

\begin_layout Standard
Here is an example for a multiline formula where the numbering is customized
 and turned off for the second line:
\begin_inset Flex Subequations
status open

\begin_layout Plain Layout
\begin_inset CommandInset label
LatexCommand label
name "eq:Here-is-an"

\end_inset


\begin_inset ERT
status open

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
theparentequation -
\backslash
roman{equation}}
\end_layout

\end_inset


\begin_inset Formula 
\begin{eqnarray}
A & = & (B-Z)^{2}=(B-Z)(B-Z)\\
 & = & B^{2}-ZB-BZ+Z^{2}\nonumber \\
 & = & B^{2}-2BZ+Z^{2}
\end{eqnarray}

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Numbering with Roman Numbers and Letters
\begin_inset CommandInset label
LatexCommand label
name "subsec:Numbering-with-Roman"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering ! with letters
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering ! with Roman numbers
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Formulas can also be numbered with Roman numbers and Latin letters.
 To number for example with small Roman numbers, the command
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
theequation}{
\backslash
roman{equation}}
\end_layout

\begin_layout Standard
is inserted before the formula in \SpecialChar TeX
 mode.
 
\series bold

\backslash
renewcommand
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
renewcommand
\end_layout

\end_inset

 redefines the predefined command 
\series bold

\backslash
theequation
\series default
 to the command 
\series bold

\backslash
roman{equation}
\series default
.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
The command 
\series bold

\backslash
renewcommand
\series default
 has the same scheme like the command 
\series bold

\backslash
newcommand
\series default
 that is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:The-Command-newcommand"

\end_inset

.
\end_layout

\end_inset

 
\series bold
equation
\series default
 is the formula counter.
 When the command 
\series bold

\backslash
the
\series default
 is used as prefix for a counter, the value of the counter is output as
 Arabic number.
 When a formula is numbered, \SpecialChar LaTeX
 sets internally the command 
\series bold

\backslash
theequation
\series default
 behind the formula.
 
\series bold

\backslash
roman{equation}
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
roman
\end_layout

\end_inset


\series default
 outputs the counter as small Roman number.
\end_layout

\begin_layout Standard
All formulas behind the command 
\series bold

\backslash
renew
\series default
c
\series bold
ommand
\series default
 are now numbered Roman.
 To switch to numbering with big Roman numbers, the command is inserted
 again, but 
\series bold

\backslash
roman
\series default
 is replaced by 
\series bold

\backslash
Roman
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! R ! 
\backslash
roman@
\backslash
Roman
\end_layout

\end_inset

.
 To 
\begin_inset Quotes eld
\end_inset

number
\begin_inset Quotes erd
\end_inset

 with small Latin letters there is the command 
\series bold

\backslash
alph
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
alph
\end_layout

\end_inset

, for big ones there is the command 
\series bold

\backslash
Alph
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
alph@
\backslash
Alph
\end_layout

\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 Only maximal 26
\begin_inset space ~
\end_inset

formulas can be numbered with Latin letters in one document.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
roman{equation}}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Formula 
\begin{equation}
A=\textrm{small roman}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
Roman{equation}}
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
B=\textrm{big Roman}\label{eq:Rom}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
alph{equation}}
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
C=\textrm{small Latin}
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
Alph{equation}}
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
D=\textrm{big Latin}\label{eq:Lat}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
To switch back to the default numbering, insert the command:
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
theequation}{
\backslash
arabic{equation}}
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
arabic
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
arabic{equation}}
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
E=\textrm{Arabic}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

As you see, formulas are numbered serially independent from the numbering
 style.
 When then numbering should start with 
\begin_inset Quotes eld
\end_inset

1
\begin_inset Quotes erd
\end_inset

 when the style is changed, new equation counters have to be defined.
 A description about this can be found in the file 
\begin_inset CommandInset href
LatexCommand href
name "Formula-numbering.lyx"
target "run:Formula-numbering.lyx"
literal "false"

\end_inset

.
\end_layout

\begin_layout Subsection
User-defined Numbering
\begin_inset CommandInset label
LatexCommand label
name "subsec:User-defined-Numbering"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering ! user-defined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 If the document language is a right-to-left language such as Arabic, you
 must add this to the to the \SpecialChar LaTeX
-preamble to be able to use the commands described
 in this section:
\begin_inset Newline newline
\end_inset


\series bold

\backslash
AtBeginDocument{
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold
\begin_inset space ~
\end_inset


\end_layout

\end_inset


\backslash
def
\backslash
tagform@#1{
\backslash
maketag@@@{(
\backslash
ignorespaces#1
\backslash
unskip)}} }
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula numbering ! self-defined delimiters
\end_layout

\end_inset

With the standard numbering parentheses are set around the formula number.
 To replace the parentheses for example by vertical bars, the following
 line is added to the \SpecialChar LaTeX
-preamble:
\end_layout

\begin_layout Standard

\series bold

\backslash
AtBeginDocument{
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold
\begin_inset space ~
\end_inset


\end_layout

\end_inset


\backslash
def
\backslash
tagform@#1{
\backslash
maketag@@@{|#1|}} }
\series default

\begin_inset Note Note
status collapsed

\begin_layout Plain Layout
This macro is already declared in the \SpecialChar LaTeX
-preamble for testing.
 To activate it, remove the percent signs at the beginning.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To use other characters, the vertical bars besides the 
\series bold
#1
\series default
 are replaced by one ore more characters.
 To get only the formula number the vertical bars are omitted.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

When there should be an expression of your choice instead of the consecutive
 formula number in parentheses behind the formula, the command 
\series bold

\backslash
tag
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
tag
\end_layout

\end_inset

 is used:
\begin_inset Formula 
\begin{equation}
A+B=C\tag{something}\label{eq:tag}
\end{equation}

\end_inset

In this example the command 
\series bold

\backslash
tag
\begin_inset space \textvisiblespace{}
\end_inset

something
\series default
 was inserted in the formula.
\end_layout

\begin_layout Standard
When the command 
\series bold

\backslash
tag*
\begin_inset space \textvisiblespace{}
\end_inset

something
\series default
 is inserted instead, the star prevents the parentheses around the expression:
\begin_inset Formula 
\[
A+B=C\tag*{something}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

To restart the formula numbering with new document parts or sections, the
 following command is used:
\end_layout

\begin_layout Standard

\series bold

\backslash
@addtoreset{equation}{part}
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

@
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

 ! 
\backslash

\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

@
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

addtoreset
\end_layout

\end_inset


\begin_inset Newline newline
\end_inset

resp.
\begin_inset Newline newline
\end_inset


\series bold

\backslash
@addtoreset{equation}{section}
\end_layout

\begin_layout Standard
To be able to use these commands in \SpecialChar TeX
 mode, the 
\begin_inset Quotes eld
\end_inset

@
\begin_inset Quotes erd
\end_inset

 character has to be made 
\begin_inset Quotes eld
\end_inset

active
\begin_inset Quotes erd
\end_inset

 for \SpecialChar LaTeX
 using the command 
\series bold

\backslash
makeatletter.

\series default
 The command 
\series bold

\backslash
makeatother
\series default
 reverts this.
 So the command sequence in \SpecialChar TeX
 mode is:
\end_layout

\begin_layout Standard

\series bold

\backslash
makeatletter
\begin_inset Newline newline
\end_inset


\backslash
@addtoreset{equation}{section}
\begin_inset Newline newline
\end_inset


\backslash
makeatother
\end_layout

\begin_layout Standard
In the \SpecialChar LaTeX
-preamble 
\series bold

\backslash
makeatletter
\series default
 and 
\series bold

\backslash
makeatother
\series default
 can be omitted as they are automatically internally inserted by \SpecialChar LyX
.
\end_layout

\begin_layout Standard
To revert 
\series bold

\backslash
@addtoreset
\series default
, the file 
\series bold
remreset.sty
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
remreset
\series default
 is part of the \SpecialChar LaTeX
-package 
\series bold
carlisle
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! carlisle
\end_layout

\end_inset

 that is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! remreset
\end_layout

\end_inset

 has to be loaded in the \SpecialChar LaTeX
-preamble with the line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{remreset}
\end_layout

\begin_layout Standard
Then the command 
\series bold

\backslash
@removefromreset
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

@
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

 ! 
\backslash

\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

@
\begin_inset ERT
status collapsed

\begin_layout Plain Layout

"
\end_layout

\end_inset

removefromreset
\end_layout

\end_inset

 can be used with the same scheme as 
\series bold

\backslash
@addtoreset
\series default
.
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset

Sometimes formulas should be numbered in the following form:
\end_layout

\begin_layout Standard

\family typewriter
(section number.formula number)
\end_layout

\begin_layout Standard
The formula number should start with every section with 
\begin_inset Quotes eld
\end_inset

1
\begin_inset Quotes erd
\end_inset

.
\end_layout

\begin_layout Standard
For this case there is the command 
\series bold

\backslash
numberwithin
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! N ! 
\backslash
numberwithin
\end_layout

\end_inset

, which is used with the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
numberwithin{counter}{sectioning}
\end_layout

\begin_layout Standard
Counter denotes what kind of numbering is affected, sectioning denotes what
 number is before the dot.
\end_layout

\begin_layout Standard
Thus in our case the following \SpecialChar LaTeX
 preamble or \SpecialChar TeX
 code line is used:
\end_layout

\begin_layout Standard

\series bold

\backslash
numberwithin{equation}{section}
\end_layout

\begin_layout Standard
This is the result:
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
numberwithin{equation}{section}
\end_layout

\end_inset


\begin_inset Formula 
\begin{equation}
A+B=C
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
To number e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

tables so that the number of the part is the sectioning,
\begin_inset Newline newline
\end_inset


\series bold

\backslash
numberwithin{table}{part}
\series default
 is used.
\end_layout

\begin_layout Standard
To go back to the standard numbering or to prevent this kind of numbering
 when it is defined by the document class, the following command is inserted
 as \SpecialChar TeX
 code or to the \SpecialChar LaTeX
 preamble:
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
theequation}{
\backslash
arabic{equation}}
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! A ! 
\backslash
arabic
\end_layout

\end_inset


\series default

\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
theequation}{
\backslash
arabic{equation}}
\end_layout

\end_inset


\series bold

\begin_inset Newline newline
\end_inset


\series default
or
\series bold

\begin_inset Newline newline
\end_inset


\backslash
renewcommand{
\backslash
thetable}{
\backslash
arabic{table}}
\end_layout

\begin_layout Standard

\series bold

\backslash
numberwithin
\series default
 uses internally the command 
\series bold

\backslash
@addtoreset
\series default
, described above, that also needs to be reverted.
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
makeatletter
\end_layout

\begin_layout Plain Layout


\backslash
@removefromreset{equation}{section}
\end_layout

\begin_layout Plain Layout


\backslash
makeatother
\end_layout

\end_inset


\end_layout

\begin_layout Section
Chemical Symbols and Equations
\begin_inset CommandInset label
LatexCommand label
name "subsec:Chemical-Symbols-and"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Chemical characters ! Symbols
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Chemical equations
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Symbols ! chemical
\end_layout

\end_inset


\end_layout

\begin_layout Standard
An example text from chemistry:
\end_layout

\begin_layout Quote
The 
\begin_inset Formula $\mathrm{SO_{4}^{2-}}$
\end_inset

-ion reacts with two 
\begin_inset Formula $\mathrm{Na^{+}}$
\end_inset

-ions to sodium sulfate 
\begin_inset Formula $\left(\mathrm{Na_{2}SO_{4}}\right)$
\end_inset

.
 The chemical equation for this is:
\begin_inset Formula 
\begin{equation}
\mathrm{2\,Na^{+}+SO_{4}^{2-}\longrightarrow Na_{2}SO_{4}}\label{eq:chem-reaction}
\end{equation}

\end_inset


\end_layout

\begin_layout Standard
This chemical equation can directly be created as formula.
 To avoid that the symbols appear italic, everything is highlighted and
 changed by the shortcut 
\begin_inset Info
type  "shortcut"
arg   "font-roman"
\end_inset

 to the upright font style.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
font styles
\series bold
 
\series default
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Styles"

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
A more convenient way to typeset chemical formulas is to use the command
 
\series bold

\backslash
ce
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
ce
\end_layout

\end_inset

 that is available when the \SpecialChar LaTeX
-package 
\series bold
mhchem
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mhchem
\end_layout

\end_inset

 is installed.
 After inserting 
\series bold

\backslash
ce
\series default
 to a formula a new blue box appears where chemical formulas can be inserted
 in an intuitive way.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="10" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

H2CO3
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{H2CO3}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

SO4^2-
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{SO4^{2-}}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

(NH4)2S
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{(NH4)2S}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

KCr(SO4)2.12H2O
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{KCr(SO4)2.12H2O}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

A-B
\backslash
dbond
\begin_inset space \textvisiblespace{}
\end_inset

C
\backslash
tbond
\begin_inset space \textvisiblespace{}
\end_inset

D
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{A-B\dbond C\tbond D}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

^227
\begin_inset Formula $\downarrow$
\end_inset

_90
\begin_inset Formula $\to$
\end_inset

Th+
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{_{90}^{227}Th+}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
mu
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
hyphen
\begin_inset space \textvisiblespace{}
\end_inset

Cl
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{\ensuremath{\mu\hyphen}Cl}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

CO2
\begin_inset space \textvisiblespace{}
\end_inset

+
\begin_inset space \textvisiblespace{}
\end_inset

C
\begin_inset space \textvisiblespace{}
\end_inset

<=>
\begin_inset space \textvisiblespace{}
\end_inset

2CO
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{CO2 + C <=> 2CO}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

CO2
\begin_inset space \textvisiblespace{}
\end_inset

+
\begin_inset space \textvisiblespace{}
\end_inset

C
\begin_inset space \textvisiblespace{}
\end_inset

->[
\backslash
alpha][
\backslash
beta]
\begin_inset space \textvisiblespace{}
\end_inset

2CO}
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\ce{CO2 + C ->[\alpha][\beta] 2CO}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 It is not possible in \SpecialChar LyX
 to use the character ^ to get an up-arrow as described
 in the 
\series bold
mhchem
\series default
 manual.
 One instead uses a negative thin space followed by the command 
\series bold

\backslash
uparrow
\series default
: 
\begin_inset Formula $\ce{Fe + 2H+ -> Fe^{2+} + H2\negthinspace\uparrow}$
\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
Using 
\series bold

\backslash
ce
\series default
 the command for equation
\begin_inset space ~
\end_inset


\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:chem-reaction"

\end_inset

 is:
\begin_inset Newline newline
\end_inset


\series bold
 
\backslash
ce
\begin_inset space \textvisiblespace{}
\end_inset

2Na+
\begin_inset space \textvisiblespace{}
\end_inset

+
\begin_inset space \textvisiblespace{}
\end_inset

SO4^2-
\begin_inset space \textvisiblespace{}
\end_inset


\begin_inset space \textvisiblespace{}
\end_inset

->
\begin_inset space \textvisiblespace{}
\end_inset

Na2SO4
\end_layout

\begin_layout Standard
To create multiline chemical equations first a multiline formula is created
 as described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Multiline-Formulas"

\end_inset

.
 Afterwards the command 
\series bold

\backslash
ce
\series default
 is used in every small blue box of the formula.
 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:TEOS-reaction-1"

\end_inset

 and 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:TEOS-reaction-2"

\end_inset

 are an example of a multi-stage chemical reaction where every equation
 has its own number.
\begin_inset Formula 
\begin{eqnarray}
\ce{TEOS + 4O} & \ce{->} & \ce{Si(OH)4 + 4C2H4O}\label{eq:TEOS-reaction-1}\\
\ce{Si(OH)4} & \ce{->} & \ce{SiO2 + 2H2O}\label{eq:TEOS-reaction-2}
\end{eqnarray}

\end_inset


\end_layout

\begin_layout Standard
Besides 
\series bold

\backslash
ce
\series default
 the 
\series bold
mhchem
\series default
 package provides the command 
\series bold

\backslash
cf
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
cf
\end_layout

\end_inset

 that has to be used for special cases.
 For more information about 
\series bold

\backslash
cf
\series default
 and more examples have a look at the documentation of 
\series bold
mhchem
\series default
, 
\begin_inset CommandInset citation
LatexCommand cite
key "mhchem"
literal "true"

\end_inset

.
\end_layout

\begin_layout Section
Diagrams
\end_layout

\begin_layout Standard
\SpecialChar LyX
 supports two types of commutative diagrams: 
\series bold
amscd
\series default
 and 
\series bold
xymatrix
\series default
 that are explained in the following.
\end_layout

\begin_layout Subsection
Amscd Diagrams
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Diagrams ! amscd
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Diagrams of this type visualize relations by vertical and horizontal lines
 or arrows:
\begin_inset Formula 
\[
\begin{CD}A@>>>B@>>>C\\
@AAA@.@VVV\\
F@<<<E@<<<D
\end{CD}
\]

\end_inset


\end_layout

\begin_layout Standard
To get them, the command 
\series bold

\backslash
CD
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! C ! 
\backslash
CD
\end_layout

\end_inset


\series default
 is inserted to a formula.
 A blue box appears with two dashed lines where further commands can be
 inserted.
 With 
\begin_inset Info
type  "shortcut"
arg   "newline-insert newline"
\end_inset

 a new line is created.
 Horizontal relations are inserted in odd, vertical in even formula lines.
\end_layout

\begin_layout Standard
To create the relations there are the following commands:
\end_layout

\begin_layout Itemize

\series bold
@<<<
\series default
 creates a left arrow, 
\series bold
@>>>
\series default
 a right arrow and 
\series bold
@=
\series default
 a long equal sign
\end_layout

\begin_layout Itemize

\series bold
@AAA
\series default
 creates an up arrow, 
\series bold
@VVV
\series default
 a down arrow and 
\series bold
@|
\series default
 a vertical equal sign
\end_layout

\begin_layout Itemize

\series bold
@.

\series default
 is a placeholder for non-existent relations
\end_layout

\begin_layout Standard
All arrows can be labeled as follows:
\end_layout

\begin_layout Itemize
If text inserted between the first and second < or >, resp., it is placed
 above the arrow.
 When it is inserted between the second and third one, it appears under
 the arrow.
\end_layout

\begin_layout Itemize
When text for vertical arrows is inserted between the first and second A
 or V, resp., it is placed left beside the arrow.
 When it is inserted between the second and third one, it appears right
 beside the arrow.
 If the text contains an A or V, these letters must be set into a \SpecialChar TeX
 brace.
\end_layout

\begin_layout Standard
As example a diagram with all possible relations:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
\begin{CD}A@>j>>B@>>k>C@=F\\
@AmAA@.@VV{V}V@|\\
D@<<j<E@>k>>F@=C
\end{CD}
\]

\end_inset


\end_layout

\begin_layout Standard
The command for this is:
\begin_inset Newline newline
\end_inset


\series bold

\backslash
CD
\begin_inset space \textvisiblespace{}
\end_inset

A@>j>>B@>>k>C@=F Ctrl+Return
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold

\backslash
CD
\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset

@AmAA@.@VV
\backslash
{V
\series default

\begin_inset Formula $\to$
\end_inset


\series bold
V@| Ctrl+Return
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold

\backslash
CD
\begin_inset space \textvisiblespace{}
\end_inset


\end_layout

\end_inset

D@<<j<E@>k>>F@=C
\end_layout

\begin_layout Subsection
Xymatrix Diagrams
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Diagrams ! xymatrix
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To be able to use xymatrices, the \SpecialChar LaTeX
-package 
\series bold
xypic
\series default
 must be installed.
 A xymatrix is created by inserting the command 
\series bold

\backslash
xymatrix
\series default
 in a formula.
 Then you are able to add new matrix columns and rows like for normal matrices,
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Matrices"

\end_inset

.
\end_layout

\begin_layout Standard
In contrary to amscd diagrams, xymatrices supports diagonal and curved arrows,
 and much more.
 All possibilities to create commutative diagrams and decorations are explained
 in detail in the 
\emph on
XY-pic manual
\emph default
 that you find in the menu 
\family sans
Help\SpecialChar menuseparator
Specific
\begin_inset space ~
\end_inset

Manuals
\family default
.
\end_layout

\begin_layout Subsection

\noun on
Feynman
\noun default
 Diagrams
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Diagrams ! Feynman
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To be able to use 
\noun on
Feynman
\noun default
-diagrams, the \SpecialChar LaTeX
-package 
\series bold
feyn
\series default
 must be installed.
 A 
\noun on
Feynman
\noun default
-diagram is created by inserting the command 
\series bold

\backslash
Diagram
\series default
 in a formula.
 Then you are able to add new matrix columns and rows like for normal matrices,
 see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Matrices"

\end_inset

.
\end_layout

\begin_layout Standard
Examples how to create 
\noun on
Feynman-
\noun default
diagrams in \SpecialChar LyX
 is given in the 
\emph on
Feynman-diagram manual
\emph default
 that you find in the menu 
\family sans
Help\SpecialChar menuseparator
Specific
\begin_inset space ~
\end_inset

Manuals
\family default
.
\end_layout

\begin_layout Section
User-defined Commands
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
User-defined commands
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 The names of user-defined commands and macros may only consist of Latin
 letters.
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
The Command 
\backslash
newcommand
\begin_inset CommandInset label
LatexCommand label
name "subsec:The-Command-newcommand"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
User-defined commands ! 
\backslash
newcommand
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! N ! 
\backslash
newcommand
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Many \SpecialChar LaTeX
-commands are too long to be used frequently.
 But it is possible to define with the command 
\series bold

\backslash
newcommand
\series default
 new shorter commands.
\end_layout

\begin_layout Standard
The command scheme of 
\series bold

\backslash
newcommand
\series default
 is:
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{new command name}[number of arguments][optional
\series default
 
\series bold
value]
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold

\backslash
newcommand
\end_layout

\end_inset

{command definition}
\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 Assure that the name of the new command is not already used in your document
 or by \SpecialChar LaTeX
-packages that you use.
 When you for example define the command 
\series bold

\backslash
le
\series default
 for 
\series bold

\backslash
Leftarrow
\series default
, you get an error message because 
\series bold

\backslash
le
\series default
 is already defined as command for 
\begin_inset Quotes eld
\end_inset


\begin_inset Formula $\le$
\end_inset


\begin_inset Quotes erd
\end_inset

.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The number of arguments is an integer in the range 0
\begin_inset space \thinspace{}
\end_inset

-
\begin_inset space \thinspace{}
\end_inset

9 and specifies how many arguments the new command should have.
 With the optional value a value for an optional argument can be predefined.
 When this is done, the 
\emph on
first
\emph default
 
\emph on
a
\emph default
rgument of the new command is automatically an optional one.
\end_layout

\begin_layout Standard
Here are some examples:
\end_layout

\begin_layout Itemize
To define the command 
\series bold

\backslash
gr
\series default
 for 
\series bold

\backslash
Longrightarrow
\series default
, the \SpecialChar LaTeX
-preamble line is:
\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset


\series bold

\backslash
newcommand{
\backslash
gr}{
\backslash
Longrightarrow}
\end_layout

\begin_layout Itemize
To define the command 
\series bold

\backslash
us
\series default
 for 
\series bold

\backslash
underline
\series default
, the argument (that should be underlined) must be taken into account.
 For this the preamble line is:
\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset


\series bold

\backslash
newcommand{
\backslash
us}[1]{
\backslash
underline{#1}}
\series default

\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset

The character 
\series bold
#
\series default
 acts as argument placeholder, the 
\series bold
1
\series default
 behind it denotes that it is the placeholder for the first argument.
\end_layout

\begin_layout Itemize
For 
\series bold

\backslash
framebox
\series default
 one can e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

define the command 
\series bold

\backslash
fb
\series default
:
\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset


\series bold

\backslash
newcommand{
\backslash
fb}[3]{
\backslash
framebox#1#2{$#3$}}
\series default

\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset

The two Dollar signs creates the extra formula needed for 
\series bold

\backslash
framebox
\series default
, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Boxes-with-Frame"

\end_inset

.
\end_layout

\begin_layout Itemize
To create a new command for 
\series bold

\backslash
fcolorbox
\series default
 where the color for the box need not be specified, the argument for the
 color is defined optional:
\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset


\series bold

\backslash
newcommand{
\backslash
cb}[3][white]{
\backslash
fcolorbox{#2}{#1}{$#3$}}
\series default

\begin_inset VSpace medskip
\end_inset


\begin_inset Newline newline
\end_inset

When the color is not specified when using 
\series bold

\backslash
cb
\series default
, the predefined color 
\series bold
white
\series default
 will be used.
\end_layout

\begin_layout Standard
A test of the new defined commands:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="6" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
A
\backslash
gr
\begin_inset space \textvisiblespace{}
\end_inset

B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $A\gr B$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
us{ABcd
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\us{ABcd}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
fb{[2cm]
\begin_inset Formula $\to$
\end_inset


\backslash
{
\begin_inset Formula $\to$
\end_inset


\backslash
{
\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\fb{[2cm]}{}{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cb{red
\begin_inset Formula $\to$
\end_inset


\backslash
{
\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cb{red}{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm" bottomspace="1mm">
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cb[green]
\backslash
{red
\begin_inset Formula $\to$
\end_inset


\backslash
{
\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" leftline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cb[green]{red}{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Math Macros
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
User-defined commands! Math macros
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Macros
\end_layout

\end_inset


\end_layout

\begin_layout Standard
User-defined commands are especially convenient for complex expressions.
 When you are for example dealing with a document that has quadratic equations,
 the same solution type occurs several times.
 The general form of a quadratic equation is
\begin_inset Formula 
\[
0=\lambda^{2}+p\lambda+q
\]

\end_inset

The general form of the solution is
\begin_inset Formula 
\[
\lambda_{1,2}=-\frac{p}{2}\pm\sqrt{\frac{p²}{4}-q}
\]

\end_inset


\end_layout

\begin_layout Standard
To define a command for the solution formula where only the three parameters
 
\begin_inset Formula $\lambda$
\end_inset

, 
\begin_inset Formula $p$
\end_inset

 and 
\begin_inset Formula $q$
\end_inset

 need to be specified and the index of 
\begin_inset Formula $\lambda$
\end_inset

 can be given optionally, the \SpecialChar LaTeX
-preamble line is
\begin_inset Newline newline
\end_inset


\series bold

\backslash
newcommand{
\backslash
qG}[4][1,
\backslash
,2]{#2_{#1}=-
\backslash
frac{#3}{2}
\backslash
pm
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold

\backslash
newcommand
\end_layout

\end_inset


\backslash
sqrt{
\backslash
frac{#3^{2}}{4}-#4}}
\end_layout

\begin_layout Standard
To create with this the solution formula, the command
\begin_inset Newline newline
\end_inset


\series bold

\backslash
qG{
\backslash
lambda
\begin_inset Formula $\to$
\end_inset


\backslash
{p
\begin_inset Formula $\to$
\end_inset


\backslash
{q
\series default
 is inserted to a formula
\series bold
.
\end_layout

\begin_layout Standard
The definition of the new command is unintuitive because one has to know
 the schemes of all used \SpecialChar LaTeX
 commands, e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

that a fraction is inserted in \SpecialChar LaTeX
 as 
\series bold

\backslash
frac{numerator}{denominator}
\series default
.
 Furthermore one can easily forget a brace in the definition and cannot
 see in \SpecialChar LyX
 what the new command is doing.
 To avoid these problems \SpecialChar LyX
 offers the possibility to use math macros instead
 of the command 
\series bold

\backslash
newcommand
\series default
.
\end_layout

\begin_layout Standard
A math macro is created by using the menu 
\family sans
Insert\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\family default
 or the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-macro newmacroname_newcommand"
\end_inset

.
 The math macro toolbar appears together with the following box where the
 macro is defined:
\begin_inset Newline newline
\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Graphics
        filename clipart/macrobox.png
        scale 95

\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset FormulaMacro
\newcommand{\qG}[4][1,\,2]{#2_{#1}=-\frac{#3}{2}\pm\sqrt{\frac{#3^{2}}{4}-#4}}
\end_inset


\backslash
newmacroname is the default name of the macro that should be changed to
 something sensible.
 The wanted formula is inserted in the first blue box.
 An argument placeholder is inserted with the command 
\series bold

\backslash
#argumentnumber
\series default
, e.
\begin_inset space \thinspace{}
\end_inset

g
\begin_inset space \space{}
\end_inset


\series bold

\backslash
#1
\series default
 or by using the macro toolbar button 
\begin_inset Info
type  "icon"
arg   "math-macro-add-param"
\end_inset

.
 Argument placeholders are displayed red.
 A maximum of 9
\begin_inset space ~
\end_inset

arguments are possible.
 Optional arguments are created with the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-macro-add-optional-param"
\end_inset

.
 The first non-optional argument can be transformed to an optional one with
 the toolbar button 
\begin_inset Info
type  "icon"
arg   "math-macro-make-optional"
\end_inset

.
 In the second blue box the appearance of the macro in \SpecialChar LyX
 can be defined.
 Normally you want to see it as it is defined, so the box is kept empty.
 But when you have created a macro that needs lot of space on the screen,
 you can insert in the box for example
\begin_inset Newline newline
\end_inset


\series bold
qG: 
\backslash
#1
\series default
 
\series bold
,
\series default
 
\series bold

\backslash
#2
\series default
 
\series bold
,
\series default
 
\series bold

\backslash
#3, 
\backslash
#4
\begin_inset Newline newline
\end_inset


\series default
For the macro only the arguments with the macro name in front of them will
 then be displayed in \SpecialChar LyX
, leading to a better overview.
 The formula appears in the output as defined in the first box.
\begin_inset Newline newline
\end_inset

The appearance of macros in formulas can furthermore be changed for single
 macros by setting the cursor in the macro and using the menu 
\family sans
View\SpecialChar menuseparator
(Un)fold
\begin_inset space ~
\end_inset

Math
\begin_inset space ~
\end_inset

Macro
\family default
.
\end_layout

\begin_layout Standard
To use a macro, the macro name is inserted as command to a formula, in our
 case 
\series bold

\backslash
qG
\series default
.
 Our macro looks in \SpecialChar LyX
 like this:
\begin_inset Newline newline
\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Graphics
        filename clipart/macrouse.png
        scale 95

\end_inset


\begin_inset space \hspace*{\fill}
\end_inset


\begin_inset Newline newline
\end_inset

Here is our macro example with the arguments 
\begin_inset Formula $x$
\end_inset

, 
\begin_inset Formula $\ln(x)$
\end_inset

 and 
\begin_inset Formula $B$
\end_inset

:
\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
\qG x{\ln(x)}B
\]

\end_inset


\end_layout

\begin_layout Standard
\SpecialChar LyX
 offers in the menu 
\family sans
Tools\SpecialChar menuseparator
Preferences\SpecialChar menuseparator
Editing\SpecialChar menuseparator
Control
\family default
 different styles to edit macros.
 To find the style that suits you the most, choose a style and set the cursor
 in a macro formula to see the difference.
\end_layout

\begin_layout Standard
A math macro is transformed internally to a 
\series bold

\backslash
newcommand
\series default
 command when exporting the document.
 The created 
\series bold

\backslash
newcommand
\series default
 command is not placed in the \SpecialChar LaTeX
-preamble, therefore macros can only be used
 in formulas that are in the document below the macro definition box.
\end_layout

\begin_layout Standard
Math macros can also be directly created from a 
\series bold

\backslash
newcommand
\series default
 command.
 When writing for example the command
\series bold

\begin_inset Newline newline
\end_inset


\backslash
newcommand{
\backslash
larrow}[2]{
\backslash
xleftarrow[#2]{#1}}
\begin_inset Newline newline
\end_inset


\series default
in \SpecialChar LyX
 as normal text, highlighting it completely and using then the shortcut
 
\family sans
Ctrl+M
\family default
, the command will be transformed to a math macro.
 Using this method you need to be careful that the 
\series bold

\backslash
newcommand
\series default
 command is typed correctly, otherwise you get a faulty macro leading to
 \SpecialChar LaTeX
 errors.
\end_layout

\begin_layout Standard
Math macros currently have the problem that further formulas in macro definition
s are handled wrongly.
 Therefore the example 
\series bold

\backslash
fb
\series default
 from 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:The-Command-newcommand"

\end_inset

 cannot be created as macro.
\end_layout

\begin_layout Standard
When the cursor is in a macro definition box, you will see the macro toolbar
 in \SpecialChar LyX
:
\end_layout

\begin_layout Standard
\begin_inset VSpace defskip
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Graphics
        filename clipart/MacroToolbar.png

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Macros ! Toolbar
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset VSpace defskip
\end_inset


\end_layout

\begin_layout Standard
The macro toolbar contains from left to right the following buttons:
\end_layout

\begin_layout Standard
\begin_inset VSpace defskip
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Tabular
<lyxtabular version="3" rows="9" columns="2">
<features islongtable="true" longtabularalignment="center">
<column alignment="left" valignment="top">
<column alignment="left" valignment="top" width="85col%">
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-remove-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Remove Last Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-add-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Append Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-make-optional"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Transform First Non-Optional to
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator

\end_layout

\end_inset

Optional Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-make-nonoptional"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Transform Last Optional to
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator

\end_layout

\end_inset

Non-Optional Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-remove-optional-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Remove Optional Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-add-optional-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Insert Optional Argument
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-remove-greedy-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Remove Last Argument
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator

\end_layout

\end_inset

Spitting Out To The Right
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-append-greedy-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Append Argument
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator

\end_layout

\end_inset

Eating From The Right
\end_layout

\end_inset
</cell>
</row>
<row interlinespace="2.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Info
type  "icon"
arg   "math-macro-add-greedy-optional-param"
\end_inset


\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator
Append Optional Argument
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Macro
\begin_inset space ~
\end_inset

Definition\SpecialChar menuseparator

\end_layout

\end_inset

Eating From The Right
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Section
Computer Algebra Systems
\end_layout

\begin_layout Standard
\SpecialChar LyX
 offers the exchange between mathematical expressions written in \SpecialChar LyX
's math
 editor and external applications or user defined scripts.
 Currently supported applications are 
\family sans
Maple
\family default
, 
\family sans
Mathematica
\family default
, 
\family sans
Maxima
\family default
 and 
\family sans
Octave
\family default
.
 Note that the set of supported mathematical constructs is limited only
 to very simple cases.
\end_layout

\begin_layout Subsection
Usage
\end_layout

\begin_layout Standard
Write some expression in a formula, go to the 
\family sans
Edit\SpecialChar menuseparator
Math\SpecialChar menuseparator
Use Computer Algebra System
\family default
 menu and choose the application you have installed on the computer.
 After that the result of computation should show on the right side of the
 expression together with the 
\begin_inset Quotes eld
\end_inset

=
\begin_inset Quotes erd
\end_inset

 operator.
\end_layout

\begin_layout Standard
Here are few simple examples (with results from 
\family typewriter
Maxima
\family default
) to show what kind of computations can be performed:
\end_layout

\begin_layout Itemize
\begin_inset Formula $\frac{37}{3}*2-\sum_{i=1}^{3}i^{i}=-\frac{22}{3}$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $\frac{37.0}{3}=12.33333333333333$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $\int_{1}^{2}\sin(x)dx=\cos1-\cos2$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $\int\left(\frac{1}{1+x^{3}}\right)dx=-\frac{\log\left(x^{2}-x+1\right)}{6}+\frac{\arctan\left(\frac{2\,x-1}{\sqrt{3}}\right)}{\sqrt{3}}+\frac{\log\left(x+1\right)}{3}$
\end_inset


\begin_inset Newline newline
\end_inset


\begin_inset Note Greyedout
status open

\begin_layout Plain Layout

\series bold
Note:
\series default
 One needs to use proper delimiter insets 
\begin_inset Formula $\left(\right)$
\end_inset

 instead of simple '(' ')' characters.
\end_layout

\end_inset

 
\end_layout

\begin_layout Itemize
\begin_inset Formula $\det\left[\begin{array}{ccc}
1 & 6 & 7\\
2 & 5 & 8\\
3 & 4 & 17
\end{array}\right]=-56$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $\lim_{x\rightarrow0}\left(\frac{\sin(x)}{x}\right)=1$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $powerseries\left(-\log\left(5-x\right),x,1\right)=\sum_{{\mathit{i}_{2}}=0}^{\infty}{\frac{4^{-{\mathit{i}_{2}}-1}\,\left(x-1\right)^{{\mathit{i}_{2}}+1}}{{\mathit{i}_{2}}+1}}-\log4$
\end_inset


\end_layout

\begin_layout Itemize
\begin_inset Formula $solve\left(x_{1}+y_{1}^{3}=y_{1}+x_{1}^{2},x_{1}\right)=\left[x_{1}=-\frac{\sqrt{4\,y_{1}^{3}-4\,y_{1}+1}-1}{2},x_{1}=\frac{\sqrt{4\,y_{1}^{3}-4\,y_{1}+1}+1}{2}\right]$
\end_inset


\end_layout

\begin_layout Subsection
Keyboard shortcut
\end_layout

\begin_layout Standard
Currently there is no keyboard shortcut for calling the algebra applications.
 One can easily bind a shortcut to the 
\family sans
math-extern
\family default
 \SpecialChar LyX
 function (see the 
\family sans
\emph on
\SpecialChar LyX
 Functions
\family default
\emph default
 manual).
 One could e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

bind the 
\family sans
Return
\family default
 key inside the math editor.
 To bind it to 
\family typewriter
Maxima
\family default
 one would use this shortcut definition command:
\end_layout

\begin_layout Standard

\series bold
command-alternatives paragraph-break;math-extern maxima
\end_layout

\begin_layout Section
Miscellaneous
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Miscellaneous
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Negative Numbers
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Numbers ! negative
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Negative numbers often look ugly in formulas because the minus sign before
 the number is set with the same length as the minus operator sign.
 When writing the negative number in normal text, the minus sign appears
 correctly.
\end_layout

\begin_layout Standard
Thus, the problem disappears when converting the minus sign to mathematical
 text.
\end_layout

\begin_layout Standard
An example to visualize the problem:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="3" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="right" valignment="top" width="0pt">
<column alignment="left" valignment="top">
<row>
<cell alignment="right" valignment="top" topline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
normal text:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
x = -2
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="right" valignment="top" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
formula:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $x=-2$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="right" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
solution:
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" rightline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $x=\textrm{-}2$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Subsection
Comma as decimal Separator
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Comma
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In \SpecialChar LaTeX
 a comma inside a formula is used, according to the English convention,
 as number group separator.
 So there will be space added behind all commas in formulas.
\end_layout

\begin_layout Standard
To avoid this, the comma is highlighted and changed to mathematical text
 (shortcut 
\begin_inset Info
type  "shortcut"
arg   "math-mode"
\end_inset

).
\end_layout

\begin_layout Standard
To use all formula commas in the document as decimal separator, the file
 
\series bold
icomma.sty
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
icomma
\series default
 is part of the \SpecialChar LaTeX
-package 
\series bold
was
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! was
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset

.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! icomma
\end_layout

\end_inset

 is loaded with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{icomma}
\end_layout

\begin_layout Subsection
Physical Vectors
\begin_inset CommandInset label
LatexCommand label
name "subsec:Physical-Vectors"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Vectors ! physical
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Predefined vectors are offered by the \SpecialChar LaTeX
-package 
\series bold
braket
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! braket
\end_layout

\end_inset

 that is loaded with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{braket}
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
ifbraket 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following table will only be displayed when the \SpecialChar LaTeX
-package 
\series bold
braket
\series default
 is installed.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The following commands are defined:
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="4" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Bra{
\backslash
psi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Bra{\psi}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Ket{
\backslash
psi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Ket{\psi}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Braket{
\backslash
psi|
\backslash
phi
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\Braket{\psi|\phi}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
The command 
\series bold

\backslash
Braket
\series default
 assures that all vertical bars are set in the size of the surrounding brackets:
\begin_inset Formula 
\[
\Braket{\phi|J=\frac{3}{2}\,,\,M_{J}}
\]

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
else 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following will be displayed when the \SpecialChar LaTeX
-package 
\series bold
braket
\series default
 is not installed:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
You need to install the \SpecialChar LaTeX
-package 
\series bold
braket
\series default
 to see the rest of this subsection in the output.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fi 
\end_layout

\end_inset


\end_layout

\begin_layout Standard
The effect of 
\series bold

\backslash
Braket
\series default
 can also be achieved using the command 
\series bold

\backslash
middle
\series default
, that is described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Automatic-Bracket-Size"

\end_inset

.
\end_layout

\begin_layout Subsection
Self-defined Fractions
\begin_inset CommandInset label
LatexCommand label
name "subsec:Self-defined-Fractions"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Fractions ! self-defined
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To define custom commands for fractions, the command 
\series bold

\backslash
genfrac
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! G ! 
\backslash
genfrac
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset

 is used in the following scheme:
\end_layout

\begin_layout Standard

\series bold

\backslash
genfrac{left
\series default
 
\series bold
bracket}{right
\series default
 
\series bold
bracket}{fraction bar thickness}{style}
\begin_inset Newline newline
\end_inset


\begin_inset Phantom HPhantom
status open

\begin_layout Plain Layout

\series bold

\backslash
genfrac
\end_layout

\end_inset

{numerator}{denominator}
\end_layout

\begin_layout Standard
The style is a number in the range of 0
\begin_inset space \thinspace{}
\end_inset

-
\begin_inset space \thinspace{}
\end_inset

3.
\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Number
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Style (Size)
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
0
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
display style formula
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
1
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
inline formula
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
2
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
small
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
3
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
tiny
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard
When no style is given, the size is adjusted to the surrounding environment
 like for the command 
\series bold

\backslash
frac
\series default
.
\end_layout

\begin_layout Standard
When no fraction bar thickness is given, the predefined value of 0.4
\begin_inset space \thinspace{}
\end_inset

pt will be used.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

For example, the commands 
\series bold

\backslash
dfrac
\series default
 and 
\series bold

\backslash
tbinom
\series default
 from 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Fractions"

\end_inset

 are defined with the commands
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
dfrac}[2]{
\backslash
genfrac{}{}{}{0}{#1}{#2}}
\end_layout

\begin_layout Standard
and
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
tbinom}[2]{
\backslash
genfrac{(}{)}{0pt}{1}{#1}{#2}}
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

To define a fraction where the fraction bar thickness can be given as optional
 argument, the following line is inserted to the \SpecialChar LaTeX
-preamble:
\end_layout

\begin_layout Standard

\series bold

\backslash
newcommand{
\backslash
fracS}[3][]{
\backslash
genfrac{}{}{#1}{}{#2}{#3}}
\end_layout

\begin_layout Standard
A test:
\begin_inset Formula 
\begin{align*}
\text{Command} &  & \mathrm{\backslash fracS[1mm]\backslash\{A\to\backslash\{B} &  & \mathrm{\backslash fracS[5mm]\backslash\{A\to\backslash\{B}\\
\text{Result} &  & \fracS[1mm]{A}{B} &  & \fracS[5mm]{A}{B}
\end{align*}

\end_inset

As one can see, the distance of the numerator and the denominator to the
 fraction bar is round about three times the bar thickness.
\end_layout

\begin_layout Subsection
Canceled Formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! canceled
\end_layout

\end_inset


\end_layout

\begin_layout Standard
There are four ways to cancel formulas or parts of formulas:
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
ifcancel 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following table will only be displayed when the \SpecialChar LaTeX
-package 
\series bold
cancel
\series default
 is installed.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\align center
\begin_inset Tabular
<lyxtabular version="3" rows="5" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Result
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cancel
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cancel{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
bcancel
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\bcancel{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row topspace="1.5mm">
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
xcancel
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\xcancel{\int A=B}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
cancelto
\begin_inset space \textvisiblespace{}
\end_inset


\backslash
int
\begin_inset space \textvisiblespace{}
\end_inset

A=B
\begin_inset Formula $\to$
\end_inset

1
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
\begin_inset Formula $\cancelto{1}{\int A=B}\hspace{3mm}$
\end_inset


\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\end_layout

\begin_layout Standard

\series bold

\backslash
cancelto
\series default
 is especially suitable to visualize the reduction of fractions within formulas:
\begin_inset Formula 
\[
\frac{\left(x_{0}+bB\right)^{2}}{\left(1+b^{2}\right)^{\cancelto{2}{3}}}=\frac{x_{0}^{2}+B^{2}-r_{g}^{2}}{\cancel{1+b^{2}}}
\]

\end_inset


\end_layout

\begin_layout Standard
To change the size of 
\series bold

\backslash
cancelto
\series default
's 
\begin_inset Quotes eld
\end_inset

subscript
\begin_inset Quotes erd
\end_inset

 value one can add the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
PassOptionsToPackage{option}{cancel}
\end_layout

\begin_layout Standard
where 
\series bold
option
\series default
 is either 
\series bold
samesize
\series default
 which leads to the same size as for the canceled value, or 
\series bold
Smaller
\series default
 which makes is it a bit smaller than normal.
\end_layout

\begin_layout Standard
To color the cancellation bar one adds this command as \SpecialChar TeX
 code:
\end_layout

\begin_layout Standard

\series bold

\backslash
renewcommand{
\backslash
CancelColor}{
\backslash
color{red}}
\end_layout

\begin_layout Standard

\series bold
red
\series default
 can be replaced by a color of your choice.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
CancelColor}{
\backslash
color{red}}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Formula 
\[
\frac{\left(x_{0}+bB\right)^{2}}{\left(1+b^{2}\right)^{\cancelto{2}{3}}}=\frac{x_{0}^{2}+B^{2}-r_{g}^{2}}{\cancel{1+b^{2}}}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
renewcommand{
\backslash
CancelColor}{
\backslash
color{black}}
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
reset the color
\end_layout

\end_inset


\end_layout

\begin_layout Standard
For further customizations, see the documentation of the package 
\series bold
cancel
\series default
, 
\begin_inset CommandInset citation
LatexCommand cite
key "cancel"
literal "true"

\end_inset

.
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! cancel
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
else 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following will be displayed when the \SpecialChar LaTeX
-package 
\series bold
cancel
\series default
 is not installed:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
You need to install the \SpecialChar LaTeX
-package 
\series bold
cancel
\series default
 to see the rest of this subsection in the output.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fi 
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Formulas in Section Headings
\begin_inset CommandInset label
LatexCommand label
name "subsec:Formulas-in-Section"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! in section headings
\end_layout

\end_inset


\end_layout

\begin_layout Standard
When formulas are used in section headings, the following has to be taken
 into account:
\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout
When 
\series bold
hyperref
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! hyperref
\end_layout

\end_inset

 support is enabled in the document settings dialog under 
\family sans
PDF
\begin_inset space ~
\end_inset

Properties
\family default
, PDF-bookmarks are created for every section heading in the table of contents.
 If a section heading contains formulas, they are incorrectly displayed
 in the bookmark text, because formulas in bookmarks infringe the PDF convention
s.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Both problems can be solved by inserting at the end of the section heading
 a short title with the menu 
\family sans
Insert\SpecialChar menuseparator
Short
\begin_inset space ~
\end_inset

Title
\family default
.
 Short titles are used as alternative for multiline section headings to
 keep the table of contents clearly arranged.
 Only the short title appears in the table of contents and therefore also
 in the PDF-bookmark.
\end_layout

\begin_layout Standard
When formulas should be used in the table of contents but 
\series bold
hyperref
\series default
 is used, one can use the following command in \SpecialChar TeX
 mode:
\end_layout

\begin_layout Standard

\series bold

\backslash
texorpdfstring{part}{alternative}
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Commands ! T ! 
\backslash
texorpdfstring
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Part is the part of the heading that shouldn't appear in the PDF-bookmark.
 This can be characters, formulas, footnotes, but also cross-references.
 The alternative is used instead of the part for the bookmark.
\end_layout

\begin_layout Standard
Here are two example headings:
\begin_inset VSpace -3mm
\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
boldmath 
\end_layout

\end_inset


\end_layout

\begin_layout Subsubsection
Heading without formula in table of contents 
\begin_inset Formula $\sqrt{-1}=\mathrm{i}$
\end_inset


\begin_inset Argument 1
status collapsed

\begin_layout Plain Layout
Heading without formula in table of contents
\end_layout

\end_inset


\end_layout

\begin_layout Subsubsection
Heading with formula in table of contents
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
texorpdfstring{
\end_layout

\end_inset

 
\begin_inset Formula $\sqrt{-1}=\mathrm{i}$
\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout

}{}
\end_layout

\end_inset


\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
unboldmath 
\end_layout

\end_inset

In the first heading a short title was used, in the second one 
\series bold

\backslash
texorpdfstring
\series default
.
\end_layout

\begin_layout Standard
To get the same formatting as for the other headings, the complete heading
 was set into a 
\series bold
boldmath
\series default
 environment
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Bold-Formulas"

\end_inset


\end_layout

\end_inset

.
\end_layout

\begin_layout Subsection
Formulas in multi-column Text
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! in multi-column text
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Formulas in multi-column text are often too wide to fit into a column and
 thus need to be set over the whole page width.
 This is done by using the \SpecialChar LaTeX
-package 
\series bold
multicol
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
multicol
\series default
 is part of every \SpecialChar LaTeX
 standard installation.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! multicol
\end_layout

\end_inset

, that is loaded with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{multicol}
\end_layout

\begin_layout Standard
\begin_inset Note Greyedout
status open

\begin_layout Plain Layout
Note that in this case the setting 
\family sans
Two-column
\begin_inset space ~
\end_inset

document
\family default
 in the menu 
\family sans
Document\SpecialChar menuseparator
Settings
\family default
 under 
\family sans
Text
\begin_inset space ~
\end_inset

Layout
\family default
\emph on
 
\emph default
must 
\emph on
not
\emph default
 be selected.
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Before the multi-column text the command
\end_layout

\begin_layout Standard

\series bold

\backslash
begin{multicols}{column number}
\end_layout

\begin_layout Standard
is written in \SpecialChar TeX
 mode.
 The column number is a number in the range of 2
\begin_inset space \thinspace{}
\end_inset

-
\begin_inset space \thinspace{}
\end_inset

10.
 Before the formula the multi-column text is ended by inserting the command
\end_layout

\begin_layout Standard

\series bold

\backslash
end{multicols}
\end_layout

\begin_layout Standard
in \SpecialChar TeX
 mode.
\end_layout

\begin_layout Standard
Due to the command some space is automatically added before the formula.
 To revert this, -6
\begin_inset space \thinspace{}
\end_inset

mm vertical space is inserted before the formula.
 When the formula style 
\series bold
Indented
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
formula styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset


\end_layout

\end_inset


\series default
 is used, -9
\begin_inset space \thinspace{}
\end_inset

mm space is inserted instead.
\end_layout

\begin_layout Standard
As example a multi-column text with a displayed formula:
\end_layout

\begin_layout Standard

\lang ngerman
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
begin{multicols}{2}
\end_layout

\end_inset

Das Spektrum wird fouriertransformiert.
 Die Fouriertransformation wird verwendet, um die überlagerten Signale (Netzwerk
, Lösungsmittel) zu trennen.
 Nachdem wir die Phasenverschiebung bestimmen konnten, interessiert uns
 nun das Aussehen des Ausgangssignals.
 Im Experiment haben wir es mit sehr vielen Teilchen zu tun, so dass man
 über alle Phasen integrieren muss.
 Sei nun 
\begin_inset Formula $S$
\end_inset

 unser normiertes Ausgangssignal und 
\begin_inset Formula $P$
\end_inset

 die Phasenverteilungsfunktion, so ergibt sich die Beziehung
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
end{multicols}
\end_layout

\end_inset


\begin_inset VSpace -6mm
\end_inset


\begin_inset Formula 
\begin{equation}
S(t)=S_{0}(t)\int_{-\infty}^{\infty}P(\phi,t)\mathrm{e}^{\mathrm{i}\phi}\,\mathrm{d}\phi
\end{equation}

\end_inset


\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
begin{multicols}{2}
\end_layout

\end_inset

wobei 
\begin_inset Formula $S_{0}$
\end_inset

 das Signal ohne Gradient ist und die Normierungsbedingung 
\begin_inset Formula $\int_{-\infty}^{\infty}P(\phi,t)\,\mathrm{d}\phi=1$
\end_inset

 gilt.
 Nun dürfen wir aber nicht den Relaxationsprozess außer Acht lassen.
 Direkt nach dem 
\begin_inset Formula $\nicefrac{\pi}{2}$
\end_inset


\begin_inset space \thinspace{}
\end_inset

-rf-Puls beginnt sich die Magnetisierung zu entfokussieren, wodurch sich
 das Signal zusätzlich abschwächt.
 Diese Abschwächung verläuft exponentiell in Abhängigkeit der so genannten
 
\begin_inset Formula $T_{2}$
\end_inset

-Zeit.
\end_layout

\begin_layout Standard

\lang ngerman
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
end{multicols}
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Formulas with Description of Variables
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Formula ! with description of variables
\end_layout

\end_inset


\end_layout

\begin_layout Standard
To describe variables within a formula, like in formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:within"

\end_inset

, a 2
\series bold
×
\series default

\begin_inset Formula $n$
\end_inset


\begin_inset space ~
\end_inset

matrix is used with left aligned columns for the 
\begin_inset Formula $n$
\end_inset

 used variables.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
matrices see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Matrices"

\end_inset


\end_layout

\end_inset

 To set the description in a smaller size, before the matrix e.
\begin_inset space \thinspace{}
\end_inset

g.
\begin_inset space \space{}
\end_inset

the command 
\series bold

\backslash
footnotesize
\series default
 is inserted.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
font sizes see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Sizes"

\end_inset


\end_layout

\end_inset


\end_layout

\begin_layout Standard
When the formula style 
\series bold
Indented
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
formula styles see 
\begin_inset CommandInset ref
LatexCommand ref
reference "sec:Formula-Styles"

\end_inset


\end_layout

\end_inset


\series default
 is used, a 
\series bold

\backslash
hfill
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold

\backslash
hfill
\series default
 only works in formulas with the style 
\series bold
Indented
\series default
, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Variable-Space"

\end_inset

.
\end_layout

\end_inset

 is inserted before and after the matrix to have the same separation of
 the matrix from the equation and the side margin.
\end_layout

\begin_layout Standard
When the formula style 
\series bold
Centered
\series default
 is used, the method described in 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Flalign-Environment"

\end_inset

 is used to indent formulas.
 Formula 
\begin_inset CommandInset ref
LatexCommand eqref
reference "eq:within"

\end_inset

 consists of five columns where in the first two columns contain the equation,
 the third the matrix and the last one an empty \SpecialChar TeX
 brace.
\begin_inset Formula 
\begin{flalign}
\hspace{30pt}F_{A} & =\rho·V·g & \footnotesize\begin{array}{ll}
\rho & \textrm{density}\\
V & \textrm{volume}\\
g & \textrm{gravitational acceleration}
\end{array} &  & {}\label{eq:within}
\end{flalign}

\end_inset


\end_layout

\begin_layout Subsection
Upright small Greek Letters
\begin_inset CommandInset label
LatexCommand label
name "subsec:Upright-small-Greek"

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Greek letters ! upright
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Most of the math fonts only provide italic small Greek letters.
 But for symbols of elementary particles like pions and neutrinos, upright
 Greek letters are needed.
 The file 
\series bold
upgreek.sty
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout

\series bold
upgreek
\series default
 is part of the \SpecialChar LaTeX
-package 
\series bold
was
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! was
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
vspace{4mm}
\end_layout

\end_inset


\end_layout

\end_inset

.
\end_layout

\end_inset


\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! upgreek
\end_layout

\end_inset

 that is loaded with the \SpecialChar LaTeX
-preamble line
\end_layout

\begin_layout Standard

\series bold

\backslash
usepackage{upgreek}
\end_layout

\begin_layout Standard
provides them.
 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
ifupgreek 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following table will only be displayed when the \SpecialChar LaTeX
-package 
\series bold
upgreek
\series default
 is installed:
\end_layout

\end_inset

 They are created when the command for a small Greek letter is started with
 
\series bold
up
\series default
.
 For example the command 
\series bold

\backslash
uptau
\series default
 creates this: 
\begin_inset Formula $\uptau$
\end_inset


\end_layout

\begin_layout Standard
With these commands reactions of elementary particles can be typeset:
\begin_inset Formula 
\[
\uppi^{+}\to\upmu^{+}+\upnu_{\upmu}
\]

\end_inset


\end_layout

\begin_layout Standard
The upright letters are more bold and wider than the italic ones.
 They should therefore not be used for units like 
\begin_inset Quotes eld
\end_inset

µm
\begin_inset Quotes erd
\end_inset

.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
else 
\end_layout

\end_inset


\begin_inset Note Note
status open

\begin_layout Plain Layout
The following will be displayed when the \SpecialChar LaTeX
-package 
\series bold
upgreek
\series default
 is not installed:
\end_layout

\end_inset


\end_layout

\begin_layout Standard
You need to install the \SpecialChar LaTeX
-package 
\series bold
upgreek
\series default
 to see the rest of this subsection in the output.
\end_layout

\begin_layout Standard
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
fi 
\end_layout

\end_inset


\end_layout

\begin_layout Subsection
Text Characters in Formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Text ! in formulas
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In some cases you might want to insert text characters directly into formulas.
 When for example the centered dot · is often used in formulas like 
\begin_inset Formula $\nu=5·10^{5}\,\mathrm{Hz}$
\end_inset

, one would have to insert the command 
\series bold

\backslash
cdot
\series default

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Binary-Operators"

\end_inset


\end_layout

\end_inset

 all the time, because this character is defined in all encodings as text
 character.
 But the encoding can be changed by this \SpecialChar LaTeX
-preamble line:
\end_layout

\begin_layout Standard

\series bold

\backslash
Declare Inputtext{183}{
\backslash
ifmmode
\backslash
cdot
\backslash
else
\backslash
textperiodcentered
\backslash
f\SpecialChar ligaturebreak
i}
\end_layout

\begin_layout Standard
The character encoding (menu 
\family sans
Document\SpecialChar menuseparator
Settings\SpecialChar menuseparator
Language
\family default
) specifies what character appears when a keyboard key is pressed.
 When the key for the character '·' is pressed, internally the command 
\series bold

\backslash
textperiodcentered
\series default
 is used.
 But this command is not available in a formula so that you would get \SpecialChar LaTeX
-errors.
 With the changed encoding the right command is chosen automatically, depending
 on if the character was inserted into a formula or not.
\end_layout

\begin_layout Standard
The encoding of several characters is saved in definition files.
 For example the encoding 
\series bold
latin9
\series default
 is defined in the file 
\series bold
latin9.def
\series default
 which is in the installation folder of \SpecialChar LaTeX
.
 Encodings should only be changed via the \SpecialChar LaTeX
-preamble and not in the definition
 files.
 Otherwise documents could not be edited by other \SpecialChar LyX
 users working on other
 computers.
\end_layout

\begin_layout Standard
\begin_inset VSpace medskip
\end_inset

Besides the centered dot, in this document the degree sign ° is defined
 with the following \SpecialChar LaTeX
-preamble line so that it can be directly inserted into
 a formula:
\end_layout

\begin_layout Standard

\series bold

\backslash
DeclareInputtext{176}{
\backslash
ifmmode^
\backslash
circ
\backslash
else
\backslash
textdegree
\backslash
f\SpecialChar ligaturebreak
i}
\end_layout

\begin_layout Subsection
\SpecialChar LaTeX
-comments in formulas
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
\SpecialChar LaTeX
-comments
\end_layout

\end_inset


\end_layout

\begin_layout Standard
In text you can insert a comment that will only be visible in the \SpecialChar LaTeX
 source
 code of your file with the menu 
\family sans
Insert\SpecialChar menuseparator
Note\SpecialChar menuseparator
Comment
\family default
.
 This is not possible in a formula but you can insert \SpecialChar LaTeX
-comments with the
 command
\end_layout

\begin_layout Standard

\series bold

\backslash
%
\end_layout

\begin_layout Standard
This creates a box in which you can write your comment.
 Due to a bug in \SpecialChar LyX

\begin_inset Foot
status collapsed

\begin_layout Plain Layout
\begin_inset CommandInset href
LatexCommand href
name "LyX-bug #9002"
target "https://www.lyx.org/trac/ticket/9002"
literal "false"

\end_inset


\end_layout

\end_inset

 you cannot write normal text inside the comment, even when you use mathematical
 text, you will see its \SpecialChar LaTeX
-commands in the \SpecialChar LaTeX
-output.
\begin_inset Newline newline
\end_inset

This a formula with a \SpecialChar LaTeX
-comment:
\begin_inset Formula 
\[
A=B%\text{This is the comment}
\]

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Section
\start_of_appendix
Typographic Advice
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Typographic advice
\end_layout

\end_inset


\end_layout

\begin_layout Standard
This section is a summary of the most important typographic rules, listed
 in ISO norms.
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
This collection was partly taken from the German semi-official dictionary
 called 
\begin_inset Quotes eld
\end_inset

Duden
\begin_inset Quotes erd
\end_inset

 
\begin_inset CommandInset citation
LatexCommand cite
key "Duden"
literal "true"

\end_inset

 that lists some of the ISO rules.
 More rules are listed in 
\begin_inset CommandInset citation
LatexCommand cite
key "Checklist"
literal "true"

\end_inset

.
\end_layout

\end_inset


\end_layout

\begin_layout Itemize
Physical units are 
\emph on
always
\emph default
 set upright
\begin_inset Foot
status collapsed

\begin_layout Plain Layout
done with font styles, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Font-Styles"

\end_inset


\end_layout

\end_inset

, no matter if they appear in italic text: 30
\begin_inset space \thinspace{}
\end_inset

km/h
\begin_inset Newline newline
\end_inset

Between the value and the unit is the smallest space, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Predefined-Space"

\end_inset

.
\begin_inset Newline newline
\end_inset

This convention is automatically fulfilled when the command 
\series bold

\backslash
unittwo
\series default
 is used.
 When it is entered to a formula, two boxes appear.
 In the first one the value is inserted, in the second one the unit, and
 one gets as above: 
\begin_inset Formula $\unit[30]{km/h}$
\end_inset


\begin_inset space \thinspace{}
\end_inset

.
 Note that 
\series bold

\backslash
unittwo
\series default
 is not a real \SpecialChar LaTeX
 command but the command 
\series bold

\backslash
unit[value]{unit}
\series default
, therefore you cannot use it in \SpecialChar TeX
 code.
\end_layout

\begin_layout Itemize
Percent and perthousand signs are set like physical units:
\begin_inset Newline newline
\end_inset

1.2
\begin_inset space \thinspace{}
\end_inset

‰ alcohol in blood
\end_layout

\begin_layout Itemize
The degree sign follows directly on the value: 15°, but not when it is used
 in units: 15
\begin_inset space \thinspace{}
\end_inset

°C
\end_layout

\begin_layout Itemize
In numbers with more than four digits the smallest space is inserted before
 every third digit to group them: 
\family roman
\series medium
\shape up
\size normal
\emph off
\bar no
\noun off
\color none
18
\begin_inset space \thinspace{}
\end_inset

473
\begin_inset space \thinspace{}
\end_inset

588
\end_layout

\begin_layout Itemize
For dimensions like 120×90×40
\begin_inset space \thinspace{}
\end_inset

cm the multiplication sign 
\begin_inset Quotes eld
\end_inset

×
\begin_inset Quotes erd
\end_inset

 is used.
 It is available either via the command 
\series bold

\backslash
times
\series default
 or via the menu 
\family sans
Insert\SpecialChar menuseparator
Special Character\SpecialChar menuseparator
Symbols
\family default
.
\end_layout

\begin_layout Itemize
Functions with names consisting of several letters are set upright to avoid
 confusions, see 
\begin_inset CommandInset ref
LatexCommand ref
reference "subsec:Predefined-Functions"

\end_inset

.
\end_layout

\begin_layout Itemize
Indices consisting of several letters, are set upright: 
\begin_inset Formula $E_{\mathrm{kin}}$
\end_inset


\begin_inset Newline newline
\end_inset

Components of matrices are set italic: 
\begin_inset Formula $\hat{H}_{kl}$
\end_inset


\end_layout

\begin_layout Itemize
The differentiation/integration operator 'd', the Euler's number 'e' and
 the imaginary unit 'i' should be set upright, to avoid mixing them up with
 other variables.
\end_layout

\begin_layout Itemize
The character that denotes a 
\noun on
Fourier
\noun default
 transformation is inserted either by the command 
\series bold

\backslash
mathscr
\begin_inset space \textvisiblespace{}
\end_inset

F
\series default
 or via the menu 
\family sans
Insert\SpecialChar menuseparator
Special Character\SpecialChar menuseparator
Symbols\SpecialChar menuseparator
Letterlike
\begin_inset space ~
\end_inset

Symbols
\family default
: 
\begin_inset Formula $\mathscr{F}$
\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Section
Synonyms
\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Synonyms
\end_layout

\end_inset


\end_layout

\begin_layout Standard
Some characters and symbols can be created with several commands.
 Here is a list of the synonym commands:
\end_layout

\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="12" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
equivalent to
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ast
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
*
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
choose
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
binom
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
geq
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ge
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lbrace
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
{
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lbracket
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
[
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leftarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
gets
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
leq
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
le
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lor
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vee
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
neq
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
not=
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
slash
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
/
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
vert
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
|
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset Tabular
<lyxtabular version="3" rows="12" columns="2">
<features booktabs="true" tabularvalignment="middle">
<column alignment="center" valignment="top" width="0pt">
<column alignment="center" valignment="top" width="0pt">
<row>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
Command
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" topline="true" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
equivalent to
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
backslash
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash

\backslash

\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dasharrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
dashrightarrow
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
land
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
wedge
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rbrace
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
}
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rbracket
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout
]
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
rightarrow
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
to
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
lnot
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
neg
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ne
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
not=
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
owns
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
ni
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
square
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Box
\end_layout

\end_inset
</cell>
</row>
<row>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
Vert
\end_layout

\end_inset
</cell>
<cell alignment="center" valignment="top" bottomline="true" usebox="none">
\begin_inset Text

\begin_layout Plain Layout

\backslash
|
\end_layout

\end_inset
</cell>
</row>
</lyxtabular>

\end_inset


\begin_inset space \hfill{}
\end_inset


\begin_inset CommandInset href
LatexCommand href
name "List"
target "https://ctan.org/tex-archive/info/symbols/comprehensive/symbols-a4.pdf"
literal "false"

\end_inset


\end_layout

\begin_layout Standard
\begin_inset Newpage newpage
\end_inset


\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "TLC2"
literal "true"

\end_inset


\shape smallcaps
F.
 Mittelbach; M.
 Goossens
\shape default
: 
\shape italic
The \SpecialChar LaTeX
 Companion
\shape default
.
 Addison Wesley, 2004
\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "Mathmode"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Description"
target "https://www.tug.org/~hvoss/PDF/mathmode.pdf"
literal "false"

\end_inset

 of \SpecialChar LaTeX
's math abilities
\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "AMS"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Description"
target "https://www.ctan.org/tex-archive/macros/latex/required/amslatex/math/amsldoc.pdf"
literal "false"

\end_inset

 of 
\begin_inset ERT
status collapsed

\begin_layout Plain Layout


\backslash
AmS
\end_layout

\end_inset

-\SpecialChar LaTeX

\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "Symbols"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "List"
target "ftp://ftp.dante.de/tex-archive/info/symbols/comprehensive/symbols-a4.pdf"
literal "false"

\end_inset

 of all symbols available with \SpecialChar LaTeX
-packages
\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "cancel"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Documentation"
target "https://www.ctan.org/tex-archive/macros/latex/contrib/cancel/cancel.pdf"
literal "false"

\end_inset

 of the \SpecialChar LaTeX
-package 
\series bold
cancel
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! cancel
\end_layout

\end_inset


\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "hyperref"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Documentation"
target "https://www.ctan.org/tex-archive/macros/latex/contrib/hyperref/doc/manual.pdf"
literal "false"

\end_inset

 of the \SpecialChar LaTeX
-package 
\series bold
hyperref
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! hyperref
\end_layout

\end_inset


\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "mhchem"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Documentation"
target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
literal "false"

\end_inset

 of the \SpecialChar LaTeX
-package 
\series bold
mhchem
\series default

\begin_inset Index idx
status collapsed

\begin_layout Plain Layout
Packages ! mhchem
\end_layout

\end_inset


\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "Duden"
literal "true"

\end_inset


\emph on
Duden Band
\begin_inset space ~
\end_inset

1
\emph default
.
 22.
\begin_inset space ~
\end_inset

Auflage, Dudenverlag, 2000
\end_layout

\begin_layout Bibliography
\begin_inset CommandInset bibitem
LatexCommand bibitem
key "Checklist"
literal "true"

\end_inset


\begin_inset CommandInset href
LatexCommand href
name "Check list"
target "https://www.nist.gov/physical-measurement-laboratory/special-publication-811"
literal "false"

\end_inset

 for reviewing manuscripts
\end_layout

\begin_layout Standard
\begin_inset CommandInset index_print
LatexCommand printindex
type "idx"
name "Index"
literal "false"

\end_inset


\end_layout

\end_body
\end_document