Math & Science ⇒ Footnote in Brace under Equation not showing

[Sanya]

Hey,

I've got an equation which I labeled with explanations via \underbrace. These explanations are text and I want to add a footnote to one of them. However, even though the footnote is shown as a little number next to the word, there is no footnote on the bottom of the page. I'm wondering how to actually see my footnote.

A working (or should I say nonworking ) example is this:

Code: Select all

\documentclass[12pt, titlepage]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{amssymb}
\usepackage{amsmath}

\begin{document}

\begin{equation}
\underbrace{123}_{\text{ e.g. \footnote{I disappear.}}}  = 42
\end{equation}

\end{document}

I'd appreciate any help.

Thanks

[localghost]

Sometimes the regular footnote mechanism fails because it is used in a forbidden mode (like here). For such cases you can try the combination of \footnotemark (←Link!) and \footnotetext (←Link!).

Code: Select all

\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage{amsmath}

\begin{document}
  \begin{equation}
    \underbrace{123}_{\text{e.g.\footnotemark}}=42
    \footnotetext{I do not disappear.}
  \end{equation}
\end{document}

Best regards and welcome to the board
Thorsten

[cgnieder]

Hi Sanya,

welcome to the LaTeX community!

In cases like this usually the pair \footnotemark/\footnotetext{<text>} is the way to go:

Code: Select all

\documentclass[12pt, titlepage]{article}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{amssymb}
\usepackage{amsmath}

\begin{document}

\begin{equation}
 \underbrace{123}_{\text{ e.g. \footnotemark}}  = 42
\end{equation}\footnotetext{I don't disappear.}

\end{document}

Regards

PS: ah, too late ...

[Sanya]

Works perfectly well.
Thank you very much for your competent guidance