array环境,amsmath的环境如下:matrix,bmatrix,pmatrix。例子如下:\begin{gather*} \begin{matrix} 0 & 1 \\ 1 & 0 \end{matrix}\quad \begin{pmatrix} 0 & -i \\ i & 0 \end{pmatrix}\\ \begin{bmatrix} 0 & -1 \\ 1 & 0 \end{bmatrix}\quad \begin{Bmatrix} 1 & 0...