[Tex/LaTex] how to enumerate theorems using letters

numberingtheorems

how to enumerate theorems using letters?

Best Answer

You could redefine the presentation of the theorem counter. For example:

\documentclass{article}
\newtheorem{theorem}{Theorem}
\renewcommand*{\thetheorem}{\Alph{theorem}}
\begin{document}
\begin{theorem}
  Text
\end{theorem}
\end{document}

Output:

Alph numbering

If your counter has the name theorem, the corresponding output command has the name \thetheorem. The command \Alph takes a counter as argument and returns the value converted into the corresponding capital letter. \alph would return lowercase letters instead.

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