deletions | additions       diff --git a/res_fitting.md b/res_fitting.md  index ea9ff24..c53d91a 100644  --- a/res_fitting.md  +++ b/res_fitting.md 
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All *k* events detected in pixel *i* are represented by vectors   \(\mathbf{p}^s_{i,k}\) and \(\mathbf{p}^p_{i,k}\). These vectors can be stacked to creat an event matrix for pixel *i*:  \[  E_i' E_i  = \left(  \begin{array}{l l}  \mathbf{p}^s_{i,0}&\mathbf{p}^p_{i,k}\\\\ 
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\end{array}  \right)  =\left(E_i^s, E_i^p\right)  \] The event matrix for the entire image is obtained by stacking all pixel event matrices:  \[  E=\left(  \begin{array}{l}  E_0\\\\  E_1\\\\  \ldots\\\\  E_i  \end{array}  \right)  \]