# four_idx_transform

> 4-index transformation of two-electron integrals from AO to MO integrals.

> This program will compute the two-electron integrals on the MO basis and store it into the EZFIO folder.

> This program can be useful if the AO –> MO transformation is an expensive step by itself.

> Needs:

> `io_mo_two_e_integrals` | `mo_two_e_integrals_in_map` |

> Touches:

> `io_mo_two_e_integrals` |  |