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Viewing Preamble for
abelian groups form an abelian category, proof that |
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% this is the default PlanetMath preamble. as your knowledge
% of TeX increases, you will probably want to edit this, but
% it should be fine as is for beginners.
% almost certainly you want these
\usepackage{amssymb}
\usepackage{amsmath}
\usepackage{amsfonts}
% used for TeXing text within eps files
%\usepackage{psfrag}
% need this for including graphics (\includegraphics)
%\usepackage{graphicx}
% for neatly defining theorems and propositions
\usepackage{amsthm}
% making logically defined graphics
\usepackage{xypic}
\xyoption{all}
% there are many more packages, add them here as you need them
% define commands here
\newcommand{\Ab}{\mathbf{Ab}}
\DeclareMathOperator{\Hom}{Hom}
\DeclareMathOperator{\coker}{coker}
\newcommand{\Mod}[1]{{}_{#1}\mathbf{Mod}}
\newcommand{\rMod}[1]{\mathbf{Mod}_{#1}}
\newtheorem*{claim*}{Claim} |
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