General ⇒ Footnotes next to Equation Number with Reference

[eschavez6]

Hi

I was trying to get a footnote next to an equation number and i found the following code will work.

Code: Select all

\begin{equation}\refstepcounter{equation}
x=y \tag{\theequation\footnotemark}
\end{equation} \footnotetext{thefootnote}

But the problem I've been having is when i try to reference the equation with the footnote? How do you cite an equation when you add a footnote to the equation number?

I'm receiving an error when i try this code.

Code: Select all

\begin{equation}\refstepcounter{equation}
\label{eq1}
x=y \tag{\theequation\footnotemark}
\end{equation} \footnotetext{thefootnote}

i also tried this code and recieved another error

Code: Select all

\begin{equation}
\label{eq1}
\refstepcounter{equation}
x=y \tag{\theequation\footnotemark}
\end{equation} \footnotetext{thefootnote}

without the label, I'm unable to reference the equation number in the document

[cgnieder]

Hi eschavez6

Welcome to the LaTeX community. \footnotemark is fragile. Try putting a \protect in front of it:

Code: Select all

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}\refstepcounter{equation}\label{eq1}
  x=y \tag{\theequation\protect\footnotemark}
\end{equation} \footnotetext{thefootnote}
\end{document}

Regards

[eschavez6]

That's great it worked

But when i reference the equation, each time it creates a new footnote symbol in the referenced equation number. The pdf looks like this:

As you can see in equation (2*)

x=y (2^)

--------
^thefootnote



is there a way to reference an equation with a footnote without there being ia footnote int he reference? I want the text to look like this:


As you can see in equation (2)

x=y (2*)

--------
*thefootnote



Thanks in advance