In this and that post, it is explained how to put a footnote in math mode. The problem is that the number of footnotemark might be confused with exponents and viceversa: how can I use a symbol (say §, for example) instead?

Note I wish to use symbols only in math mode not in the rest of the text.

  • 4
    It's very simple: never footnote formulas. ;-)
    – egreg
    Dec 30, 2015 at 15:09

1 Answer 1


Don't footnote math. Never. However, if you don't want to listen to this advice, here's a way:

\usepackage[papersize={8cm,6cm}]{geometry} % just to save space



Some text with a footnote.\footnote{Some text in the footnote}
a^n+b^n\ne c^n\,\footnotemarkmath
\]\footnotetextmath{I found a very smart proof of
this, but the footnote space doesn't contain it.}


enter image description here

  • I see that you don't have @Christian Hupfer problem with numeration
    – mattiav27
    Dec 30, 2015 at 15:59
  • @mattiav27: I see that you have a problem with giving proper feedback ;-)
    – user31729
    Dec 30, 2015 at 16:35
  • @egreg If I choose to heed the advice not to footnote math what could be alternative solutions? Feb 23, 2017 at 13:29
  • @HennadiiMadan You can footnote the preceding or the following text. The problem with footnote marks in formulas is that they make them ambiguous.
    – egreg
    Feb 23, 2017 at 13:31

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