deletions | additions       diff --git a/res_fitting.md b/res_fitting.md  index 293ebf3..7264ff2 100644  --- a/res_fitting.md  +++ b/res_fitting.md 
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E =   \left(  \begin{array}{l}  \mathbf{p}_{i,0}\\  \mathbf{p}_{i,1}\\  \ldots\\ \mathbf{p}_{i,0}\\\\  \mathbf{p}_{i,1}\\\\  \ldots\\\\  \mathbf{p}_{i,k}  \end{array}  \right)