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I am currently writing up some lecture notes and would like to have therefore a "\solution" environment which should work basically as the amsthm \proof environment, just writing "Solution." instead of "Proof." at the begin of a solution of an exercise. Of course I can achieve this by switching with

\renewcommand{\proofname}{Solution.}

resp.

\renewcommand{\proofname}{Proof.}

at the appropriate places. While this is working, I would find it nice to have a proper \solution environment which just replicates the \proof environment. Is there an easy way to do this?

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up vote 15 down vote accepted

Yes, there's an easy way. You can define your solution environment with "Solution" as the optional argument for proof:

\documentclass{article}
\usepackage{amsthm}

\newenvironment{solution}
  {\begin{proof}[Solution]}
  {\end{proof}}

\begin{document}

\begin{proof}
test.
\end{proof}

\begin{solution}
test.
\end{solution}

\end{document}

enter image description here

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