e.g., (pq|rs) --> v_{pq}^{rs} <\Phi^{ab...}_{ij...}| --> <\Phi^{ij...}_{ab...}| Make print `\sum` optional. (check the density matrices, too)
e.g.,
(pq|rs) --> v_{pq}^{rs}
<\Phi^{ab...}{ij...}| --> <\Phi^{ij...}{ab...}|
Make print
\sumoptional.(check the density matrices, too)