这是个好玩了,我在这里错了很久 (wawawawa)。
Even though it is interesting, do not do $\begin{pmatrix}1&-i\\1&i\end{pmatrix}\begin{pmatrix}1&0\\0&-1\end{pmatrix}\begin{pmatrix}1&1\\i&-i\end{pmatrix}=\begin{pmatrix}1&i\\1&-i\end{pmatrix}\begin{pmatrix}1&1\\i&-i\end{pmatrix}=\begin{pmatrix}0&2\\2&0\end{pmatrix}$.
标签:do,begin,end,Matrix,pmatrix,&- From: https://www.cnblogs.com/hazel-wu/p/17187637.html