deletions | additions       diff --git a/Theory.tex b/Theory.tex  index dd4ca10..58cf08f 100644  --- a/Theory.tex  +++ b/Theory.tex 
...
\section{Theory}  \begin{equation}  V_{IJ} = \int \int \mathrm{d}r \,  \mathrm{d}r' \frac{\rho(r)\rho(r')}{|r-r'|} \frac{\rho^T_I(r)\rho^T_J(r')}{|r-r'|}  \end{equation}