1

This question already has an answer here:

I am not sure because that element sign under the intersection sign is not aligned. Every time I use \bigcap, \limits, for instance,

$$N(G) = \bigcap \limits_{H\in \Sigma} N_G(H)$$.

marked as duplicate by gernot, Zarko, Schweinebacke, Stefan Pinnow, Romain Picot Mar 23 '17 at 15:05

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3

You can judge by yourself which one to prefer.

\documentclass{article}
\usepackage{amsmath}

\newcommand{\raisedin}{\mathrel{\text{\raisebox{\depth}{$\in$}}}}

\begin{document}

\noindent
Normal
\[
a\in X = \bigcap_{H\in \Sigma} N_G(H)
\]
Raised
\[
a\raisedin X = \bigcap_{H\raisedin \Sigma} N_G(H)
\]

\end{document}

enter image description here

0

I don't recommend this, but....

\documentclass{article}


\newcommand{\raisedin}[1][]{\raisebox{0.05em}{#1$\in$}}


\begin{document}
\begin{equation}
 N(G) = \bigcap \limits_{H\raisedin[\scriptsize] \Sigma} N_G(H)
\end{equation}

\end{document}

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