deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 9eee6fe..f0cb5dc 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
Now we enter the expression for $G_{kq}^{h,t}(t,t')$ in the frequency domain  \begin{equation}  G_{kq}^{h,t}(\omega) = G_{kq}^{h,t}(\epsilon)\delta_{kq} G_{kq}^{h,t}(\omega)\delta_{kq}  + \sum_{\beta\gamma} g_{k}^{h,t}(\omega) V_{\gamma k} G^{t}_{\gamma\beta}(\omega)V_{\beta q}^* g_{q}^{h,t}(\omega) \end{equation}