I have a figure in LaTeX with a caption to which I need to add a formula ( equation*
or displaymath
environments). For example:
\documentclass[12pt]{article}
\begin{document}
\begin{figure}[tbph]
\begin{center}
%...
\end{center}
\caption{As you can see
\begin{displaymath}4 \ne 5\end{displaymath}
}
\label{fig:somefig}
\end{figure}
\end{document}
This makes pdflatex angry, though it will produce a PDF.
! Argument of \@caption has an extra }.
<inserted text>
\par
l.9 }
What's the right way to go about adding an equation to a figure caption?
NOTE : Please do not suggest simply using the $ ... $
math environment; the equation shown is a toy example; my real equation is much more intricate.
See also :
Using the package "caption":
\begin{figure}
\begin{center}
...
\captionsetup{singlelinecheck=off}
\caption[.]{
\begin{displaymath}
assoc\_meaning(\lambda x_{SBJ}. followed(x,y) \&actor(x) \nonumber \&actor(y),\lambda x_{SBJ}. maintained(x,\nonumber <(dist\_from(y),1))
\end{displaymath}}
\end{center}
\end{figure}
The square brackets following \\caption
aren't optional, but leaving them off won't cause an error that looks any different than the one before you added \\usepackage{caption}
and \\captionsetup{...}
.
I'm not sure why you do not want to use the $ ... $
solution, because of fractions?
If so, you can use \\dfrac
instead of \\frac
.
I would try $ \\displaystyle \\dfrac{1}{2} \\cdot \\sum_{i=0}^ni$
, ie use the \\displaystyle
command.
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