Latex sample sha

Using Cyrillic Symbols in LaTeX

Here's a quick example of a LaTeX file including a Cyrillic symbol.

\documentclass{article}
\usepackage[OT2,T1]{fontenc}
\DeclareSymbolFont{cyrletters}{OT2}{wncyr}{m}{n}
\DeclareMathSymbol{\Sha}{\mathalpha}{cyrletters}{"58}
\begin{document}
This is the Tate-Shafarevich group:  $\Sha_{E/K}$.
Here it is as a subscript:  $A_\Sha$.
\end{document}