deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index 728755e..b0c80f8 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
...
0 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 1  \end{bmatrix} \\  M_{10}^{-1} = \begin{bmatrix}  1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0 \\  -1 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 0\\  -1 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0\\  0 & -1 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0\\  -1 & 0 & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0\\  1 &-1 & -1 & 0 & 0 & 1 & 0 & 0 & 0 & 0\\  -1 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 0\\  0 & 0 & 0 & -1 & 0 & 0 & 0 & 1 & 0 & 0\\  0 & 0 & -1 & 0 & 0 & 0 & 0 & 0 & 1 & 0 \\  x & -1 & 0 & 0 & -1 & 0 & 0 & 0 & 0 & 1  \end{bmatrix} \\  \end{equation}  Looking again for a column cascading pattern, on the left most column there is the pattern, \\