latex error: environment proof undefined

Question

hi i am using latex... wanted to use the following:

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

it gives me the following error: !Latex error: Environment proof undefined. can you help me to solve this problem? thanks

Answer 1

The proof environment is part of AMS-LaΤεχ, not plain LaΤεχ, so you need to:

\usepackage{amsthm}

See this AMS-LaTeX page for details. If you don't already have the packages installed, grab them at http://www.ams.org/tex/amslatex.html

Answer 2

The proof environment requires the amsthm package.

amsthm is contained in amsmath which you can get from the AMS-LaTeX package here.