# Footnote after equation

Imagine I have an equation $$x=1+3$$ \footnote{Hello World!}

How can I put the number of the footnote right beside the equation? I've tried doing just

$x=1+3$ \footnote{Hello World!}, but then the equation wouldn't be indented.

Any help would be appreciated.

(Edit since comment section erases spaces)

I get something like

      [indented equation]


(footnote_number)

And I would like to get

           [Indented equation](footnote_number)

• – Werner Sep 16 '14 at 23:59
• Using a footnote within the equation would be confusing at it would resemble a superscript/exponent. How do you want the output to look? – Werner Sep 17 '14 at 0:01
• I get something like [indented equation] (footnote_number) And I would like to get [Indented equation](footnote_number) – An old man in the sea. Sep 17 '14 at 0:07
• Just put the \footnote inside the $...$ (not $$...$$). – Werner Sep 17 '14 at 0:10

\renewcommand{\thefootnote}{\fnsymbol{footnote}}
\indent$x=1+3$\footnote[2]{Hello World!}