# How to rename theorem (or lemma) in Beamer?

I usually write theorem as follows:

\begin{theorem}[abc]
...
\end{theorem}


Then the title will be Theorem (abc). I would like to name it differently, for instance, "Theorem of abc", "ABC theorem"... Could anyone tell me how to do it?

Thank you very much!

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possible duplicate of Customizing theorem name –  Peter Grill Aug 30 '11 at 0:44

You can redefine the theorem begin, and theorem end templates. In the following example, I suppressed the numbering and the parentheses, and added "of" between the theorem name and the theorem additional note:

\documentclass{beamer}

\makeatletter
\setbeamertemplate{theorem begin}
{%
\begin{\inserttheoremblockenv}
{%
\inserttheoremname
\inserttheorempunctuation
}%
}
\setbeamertemplate{theorem end}{\end{\inserttheoremblockenv}}
\makeatother

\begin{document}

\begin{frame}
\begin{theorem}[Fermat]
Test theorem.
\end{theorem}
\end{frame}

\end{document}


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