deletions | additions       diff --git a/Complex.tex b/Complex.tex  index 0baab37..21a4bee 100644  --- a/Complex.tex  +++ b/Complex.tex 
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\begin{equation}  \begin{bmatrix}1&1\\1&1\end{bmatrix}\#\begin{bmatrix}a&0\\0&0\end{bmatrix}=\begin{bmatrix}a&a\\a&a\end{bmatrix}\#\begin{bmatrix}1&0\\0&0\end{bmatrix}=a(\begin{bmatrix}1&1\\1&1\end{bmatrix}\#\begin{bmatrix}1&0\\0&0\end{bmatrix})  \end{equation}  The operation has a left identity \begin{equation}  \begin{bmatrix} 1 & 0 \\ 1 & 0 \end{bmatrix}\#\begin{bmatrix}a&b\\c&d\end{bmatrix}=\begin{bmatrix}a&b\\c&d\end{bmatrix}  \end{equation}