• 矩阵
  $$\begin{array}{cc}0& 1\\ 1& 0\end{array}$$

\begin{matrix}0 & 1 \\1 & 0
\end{matrix}

• 小括号矩阵
  $$\left(\begin{array}{cc}0& 1\\ 1& 0\end{array}\right)$$

\begin{pmatrix}0 & 1 \\1 & 0
\end{pmatrix}

• 方括号矩阵
  $$\left[\begin{array}{cc}0& 1\\ 1& 0\end{array}\right]$$

\begin{bmatrix}0 & 1 \\1 & 0
\end{bmatrix}

• 中括号矩阵
  $$\left\{\begin{array}{cc}0& 1\\ 1& 0\end{array}\right\}$$

\begin{Bmatrix}0 & 1 \\1 & 0
\end{Bmatrix}

• 单竖线矩阵
  $$\left|\begin{array}{cc}0& 1\\ 1& 0\end{array}\right|$$

\begin{vmatrix}0 & 1 \\1 & 0
\end{vmatrix}

• 双竖线矩阵
  $$\Vert \begin{array}{cc}0& 1\\ 1& 0\end{array}\Vert$$

\begin{Vmatrix}0 & 1 \\1 & 0
\end{Vmatrix}

• 多项矩阵
  $$\left(\begin{array}{cccc}{a}_{11}& a_{12}& \dots & a_{1n}\\ a_{21}& a_{22}& \dots & a_{2n}\\ ⋮& ⋮& \ddots & ⋮\\ a_{n1}& a_{n2}& \dots & a_{nn}\end{array}\right)$$

 \begin{pmatrix}a_{11} & a_{12} & \dots & a_{1n} \\a_{21} & a_{22} & \dots & a_{2n} \\\vdots & \vdots & \ddots & \vdots \\a_{n1} & a_{n2} & \dots & a_{nn} \\\end{pmatrix}

• 分块矩阵
  $$\left(\begin{array}{cc}\begin{array}{cc}1& 0\\ 0& 1\end{array}& 0\\ 0& \begin{array}{cc}1& 0\\ 0& 1\end{array}\end{array}\right)$$

\begin{pmatrix}\begin{matrix}1 & 0 \\0 & 1 \\\end{matrix} & \Large 0 \\\Large 0 & \begin{matrix}1 & 0 \\0 & 1 \\\end{matrix}
\end{pmatrix}

• 三角矩阵
  $$\left(\begin{array}{cccc}{a}_{11}& a_{12}& \dots & a_{1n}\\ & a_{22}& \cdots & a_{2n}\\ & & \ddots & ⋮\\ & & & a_{nn}\end{array}\right)$$

\begin{pmatrix}a_{11} & a_{12} & \dots & a_{1n} \\& a_{22} & \cdots & a_{2n} \\& & \ddots & \vdots \\& & & a_{nn}
\end{pmatrix}