deletions | additions       diff --git a/Slater Determinants.tex b/Slater Determinants.tex  index 71c991b..736885e 100644  --- a/Slater Determinants.tex  +++ b/Slater Determinants.tex 
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If we have the matrix for a two electron system \begin{equation}  \begin(vmatrix) \begin{vmatrix}  \phi_1(r_1) & \phi_2(r_1) \\ \phi_1(r_2) & \phi_2(r_2)  \end(vmatrix) \end{vmatrix}  \end{equation}