I am trying to align the three = using align. Here is the code:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align*}
\sum_{i \geq 1} &= \prod_{j \geq 2}\\
&\stackrel{abc, \, xyz} = \iint_{S}\\
&= \oint_\gamma .
\end{align*}
\end{document}
However, I have trouble with the second one since it is part of \stackrel and I cannot put & in front of the second =. What I actually get with the above code is the following.
How can I fix this?
\oversetand align environment: how to get correct alignment?. @QANgô, do the answers there solve your problem? – frougon May 13 '20 at 10:00