Монгол Бодлогын Сан

Заавар: $$\begin{pmatrix} a_{11} & a_{12}\\ a_{21} & a_{22} \end{pmatrix}\begin{pmatrix} b_{11} & b_{12}\\ b_{21} & b_{22} \end{pmatrix}= \begin{pmatrix} a_{11}b_{11}+a_{12}b_{21} & a_{11}b_{12}+a_{12}b_{22}\\ a_{21}b_{11}+a_{22}b_{21} & a_{21}b_{12}+a_{22}b_{22} \end{pmatrix}$$

Бодолт: $$\begin{pmatrix} \phantom{-}1 & i\\ -i & 1 \end{pmatrix}\begin{pmatrix} 1 & -i\\ i & \phantom{-}1 \end{pmatrix}= \begin{pmatrix} 1\cdot1+i\cdot i & 1\cdot(-i)+i\cdot 1\\ (-i)\cdot1+1\cdot i & (-i)\cdot(-i)+1\cdot 1 \end{pmatrix}= \begin{pmatrix} 0 & 0\\ 0 & 0 \end{pmatrix}$$