deletions | additions       diff --git a/Energies.tex b/Energies.tex  index 8e1a4e5..db87e19 100644  --- a/Energies.tex  +++ b/Energies.tex 
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\begin{equation}  ==e^{-2\alpha_{stnm}^2}(2\alpha_{stnm})^{(M-N)}\sqrt{\frac{N!}{M!}}L^{(M-N)}_N(4\alpha_{stnm}^2)\;\;\;\;\;(M\geq N)  \end{equation}  where $\alpha_{stnm}=\gamma_{st}-\gamma_{nm}$. Therefore, one can easily see that for $s=n$ and $t=m$ the matrix element become becomes  $=\delta_{MN}$.