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% TEMPLATE Friday, October 9, 1998
% amsmath package
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\documentclass{article} %
\usepackage{amsmath} % math enhancements latex2e (replaces amstex)
\usepackage{amsthm} % proclaims theoremstyle/proof environments
\usepackage{amscd} % commutative Diagram environment
\usepackage{amssymb} % AMSFonts and symbols
\usepackage{latexsym} % latex symbols (like \pounds)
\usepackage{graphicx} % graphic package for postscript figures
\usepackage{verbatim} % for comment environment
%\usepackage{makeidx} % for \makeindex and \printindex
%\usepackage{showkeys} % tool to show symbolic names of label/ref
%\usepackage{color} % to add color to text
%\usepackage[colorlinks]{hyperref} % for hyperref links
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% PAGE STYLE PARAMETERS %
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%%\setlength{\textwidth}{5.5in}
%%\setlength{\textheight}{8.5in}
%%\setlength{\topmargin}{-.5in}
%%\setlength{\oddsidemargin}{0.75in}
%%\setlength{\evensidemargin}{0.75in}
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% THEOREM ENVIRONMENTS %
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\newtheorem{theorem}{Theorem}[section]
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{definition}[theorem]{Definition}
\newcommand{\bfi}{\bfseries\itshape}
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\begin{document}
\begin{theorem}
This is a theorem
\end{theorem}
\begin{proof}
This is the proof.
\end{proof}
\begin{corollary}
This is a corollary.
\end{corollary}
\begin{proposition}
This is a proposition
\end{proposition}
\begin{lemma}
This is a lemma
\end{lemma}
\begin{definition}
This is a definition
\end{definition}
Check out the amsmath environments in {\tt Math into LaTeX} by George Gratzer:
\begin{verbatim}
multline, gather, gathered, split, align, aligned, alignat, alignedat,
\end{verbatim}
For graphics use
\begin{verbatim}
% for figurename.eps using LaTeX, and figurename.pdf for pdfLaTeX
\includegraphics[scale=0.50, angle=30]{figurename}
\end{verbatim}
\end{document}
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