T3Variations.variation_shapes

t3toolbox.frame_variations_format.T3Variations.variation_shapes()

def variation_shapes(
        self,
) -> typ.Tuple[
    typ.Tuple[typ.Tuple[int, ...], ...],  # tucker_variation_shapes. len=d. elm_len=2
    typ.Tuple[typ.Tuple[int, ...], ...],  # tt_variation_shapes. len=d. elm_len=3
]:

T3Variations shapes that fit with this T3Frame.

Shapes of the “holes” in the following tensor diagrams:

1 -- L0 -- ( ) -- R2 -- R3 -- 1
     |      |      |      |
     U0     U1     U2     U3
     |      |      |      |

1 -- L0 -- L1 -- O2 -- R3 -- 1
     |     |     |     |
     U0    U1    ( )   U3
     |     |     |     |

Return type:

t3toolbox.backend.common.typ.Tuple[t3toolbox.backend.common.typ.Tuple[t3toolbox.backend.common.typ.Tuple[int, Ellipsis], Ellipsis], t3toolbox.backend.common.typ.Tuple[t3toolbox.backend.common.typ.Tuple[int, Ellipsis], Ellipsis]]