unfold_s8_to_s4

unfold_s8_to_s4(eri, *, validate=True)

Unfolds an 8-fold symmetric tensor to 4-fold symmetries (2-dimensional).

Parámetros:

• eri (Tensor | ndarray | SparseArray) – the 1-dimensional tensor to unfold.

• validate (bool) – when set to False, the requirements of eri are not validated.

Devuelve:

A 4-fold symmetric tensor.

Muestra:

ValueError – if eri is not 1-dimensional.

Tipo del valor devuelto:

S4Integrals