bmatrix test - nschloe/purple-pi GitHub Wiki

No spaces:

A = \begin{bmatrix}
   a & b \\
   c & d
\end{bmatrix}

One space:

A = \begin{bmatrix}
   a & b \\
   c & d 
\end{bmatrix}

Two spaces:

A = \begin{bmatrix}
   a & b \\
   c & d  
\end{bmatrix}