# Proof without boxes in Beamer

how can I ignore the boxes around the proof in my Beamer presentation?

Son Lemma 1 is in a box, but I don't want the proof to be in the box.

• Welcome to TeX.SX! Please help us help you and add a minimal working example (MWE) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – DG' Feb 9 at 21:37
• This nice answer shows you how you could get different boxes for different environments. And naively I would say that if you do not want a box around the proof, just do not put the proof in a proof environment. – marmot Feb 9 at 21:47

To have the proof not inside a block, you could change the proof begin and proof end templates like in the following example:

\documentclass{beamer}

\usecolortheme{orchid}

% Proofs
\setbeamertemplate{proof begin}{
%\begin{block}{\insertproofname}
}

\setbeamertemplate{proof end}{
%\end{block}
}

\begin{document}

\begin{frame}
text

\begin{proof}
proof
\end{proof}

\begin{lemma}
lemma
\end{lemma}

\end{frame}

\end{document}