\begin_inset Text
\begin_layout Plain Layout
-\begin_inset Formula $\backslash{\textrm momentum}\{fA\}\{\vec{p\}}$
+\begin_inset Formula $\backslash\mathrm{momentum}\{fA\}\{\vec{p\}}$
\end_inset
\begin_inset Text
\begin_layout Plain Layout
-\begin_inset Formula $\backslash{\textrm vertexlabel}^{e^{+}}fA$
+\begin_inset Formula $\backslash\mathrm{vertexlabel}^{e^{+}}fA$
\end_inset
\begin_inset Text
\begin_layout Plain Layout
-\begin_inset Formula $fglS\backslash{\textrm vertexlabel}_{\gamma}$
+\begin_inset Formula $fglS\backslash\mathrm{vertexlabel}_{\gamma}$
\end_inset
\begin_inset Text
\begin_layout Plain Layout
-\begin_inset Formula $\Diagram{\vertexlabel^{{\textrm e^{+}}}fA\\
+\begin_inset Formula $\Diagram{\vertexlabel^{\mathrm{e^{+}}}fA\\
fglS\vertexlabel_{\gamma}
}
$