\series default
・
\series bold
+mathdots
+\series default
+・
+\series bold
mhchem
\series default
・
などを挿入すると、青枠が二つの垂直線のあいだに現れるので、そこに行列を挿入することができます。
\end_layout
+\begin_layout Standard
+\begin_inset Note Greyedout
+status open
+
+\begin_layout Plain Layout
+
+\series bold
+\lang english
+Note:
+\series default
+ LaTeX limits the number of matrix columns with decorations to 10.
+ If you need more than 10
+\begin_inset space ~
+\end_inset
+
+columns, you have to add this line to the document preamble:
+\end_layout
+
+\begin_layout Plain Layout
+
+\series bold
+\lang english
+
+\backslash
+setcounter{MaxMatrixCols}{number}
+\end_layout
+
+\begin_layout Plain Layout
+
+\lang english
+where
+\emph on
+number
+\emph default
+ is the number of columns between 11 and 99.
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
\begin_layout Standard
\begin_inset VSpace bigskip
\end_inset