Latex 常用格式

数学宏包  

\usepackage{amsmath,amssymb,amsfonts,amsbsy}

页边距

\usepackage{geometry}
\geometry{left=2.95cm,right=2.95cm,top=3.6cm,bottom=3.6cm}

数学理论

\newtheorem{definition}{Definition}[section]
\newtheorem{theorem}{Theorem}[section]
\newtheorem{example}{Example}[section]
\newtheorem{remark}{Remark}[section]

\numberwithin{equation}{section} %公式按照章节编号

自定义新命令

\newcommand{\bu}[1]{\textbf{\underline{#1}}}

 proof 环境

\usepackage{amsthm}

this is a proof. \qed

\begin{equation}
  proof   \qedhere
\end{equation}

%