[tex-live] TeX Live questions

[humberto gonzalez-corona]

Hi, thank you for your help yesterday. I am using the amsmath package as you suggested but for some reason the following command does not work;


\begin{proof}

Trivial, use

\begin{equation}

E=mc^2

\end{equation}

\end{proof}


I get an error message: !LaTeX Error: Environment proof undefined.


I also tried to fake it by adding a square at the end of my proof with \boxempty. I also get an error message,


How can I solve these problems using teX Live?


Thank you


Humberto
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