====== LaTeX ======
  * Official site:[[http://www.latex-project.org/|latex-project.org]]
  * 截图识别为latex的工具:[[https://mathpix.com/|Mathpix snip]],
===== 数学符号表 =====
  * {{:public:math:latex_math_symbol_tables.pdf|}}
  * {{ :public:math:lshort-cn.pdf |}}
  * [[http://en.wikibooks.org/wiki/LaTeX/Mathematics|这个讲解得不错]]; 示例:<code>
f(n) =
\begin{cases}
n/2 & \quad \text{if } n \text{ is even} \\
-(n+1)/2 & \quad \text{if } n \text{ is odd}\\
\end{cases}
</code>表示: \[
f(n) =
\begin{cases}
n/2 & \quad \text{if } n \text{ is even} \\
-(n+1)/2 & \quad \text{if } n \text{ is odd}\\
\end{cases} 
\]

  * 十字分割 \[ \begin{array}{c|c}
  1 & 2 \\ 
  \hline
  3 & 4
 \end{array} \]
  * 矩阵 \[ A_{m,n} = 
 \begin{pmatrix}
  a_{1,1} & a_{1,2} & \cdots & a_{1,n} \\
  a_{2,1} & a_{2,2} & \cdots & a_{2,n} \\
  \vdots  & \vdots  & \ddots & \vdots  \\
  a_{m,1} & a_{m,2} & \cdots & a_{m,n} 
 \end{pmatrix} \]