[Tex/LaTex] How to type primed sum

Question

I need to type a "primed sum" (a summation symbol with a ' at the top right corner of the summation symbol) in latex. How can I do this?

Answer 1

The amsmath package has documentation which suggests there are 2 choices, depending on whether your sum has limits or not.

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[\sum\nolimits'\] %if no limits in the sum
\[ \sideset{}{'}\sum_{n<k,\;\text{$n$ odd}} nE_n \] %if limits in the sum
$\sum^{'}$
\end{document}