deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 5a49ca2..bfec028 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
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\end{equation}  Inverses \begin{equation}  M_{2}^{-1} = \begin{bmatrix}  1 & 0 \\  -1 & 1  \end{bmatrix} \\  M_{3}^{-1} = \begin{bmatrix}  1 & 0 & 0 \\  -1 & 1 & 0 \\  -1 & 0 & 1  \end{bmatrix} \\  M_{4}^{-1} = \begin{bmatrix}  1 & 0 & 0 & 0 \\  -1 & 1 & 0 & 0 \\  -1 & 0 & 1 & 0 \\  0 & -1 & 0 & 1  \end{bmatrix} \\  M_{5}^{-1} = \begin{bmatrix}  1 & 0 & 0 & 0 & 0 \\  -1 & 1 & 0 & 0 & 0 \\  -1 & 0 & 1 & 0 & 0 \\  0 & -1 & 0 & 1 & 0 \\  -1 & 0 & 0 & 0 & 1  \end{bmatrix} \\  \end{equation}