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This question already has an answer here:

I guess it is a greek letter but couldn't find out how to use latex to type it out.enter image description here

marked as duplicate by barbara beeton, Jesse, CarLaTeX, Chris H, TeXnician Mar 25 '17 at 9:39

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I was unable to find the symbol in http://detexify.kirelabs.org/classify.html. You might find it in http://www.ctan.org/pkg/comprehensive. See also How to look up a symbol or identify a math symbol or character?.

Until someone posts a better solution, you might want to go with this.

\documentclass[border=10pt]{standalone}

\newcommand{\Varpi}{\rotatebox[origin=c]{180}{$\Pi\kern-0.361em\Pi$}}

\usepackage{tikz,amsmath}

\begin{document}

This \Varpi{} works.

This A $\Varpi$ B and $A \Varpi B$, too.

\end{document}

enter image description here

  • no, the symbol requested really is a cyrillic Sha, and the question is a duplicate of the question linked in a comment. that's not the only way to get this symbol though. depending on what font is used, with utf8 input there are other methods; see What packages will let me use Cyrillic characters in math mode? for possibilities. – barbara beeton Mar 25 '17 at 3:17
  • Indeed. I was not aware of Ш and was pretty sure that there is a better solution: "Until someone posts a better solution...". I hope that mixing different fonts works well in this case. – CampanIgnis Mar 25 '17 at 11:20

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