utv_entries_derivatives_transpose

t3toolbox.backend.utv_sampling.utv_entries_derivatives_transpose(c, index, pp, frame_data, order, sum_over_probes=False)

def utv_entries_derivatives_transpose(
        c,                # residual jet (scalar), shape=(order+1,)+W+K+C
        index,            # int array, shape=(d,)+W
        pp,               # perturbation P, len=d, ith elm_shape=W+(Ni,)
        frame_data,       # UT3Frame .data (orthogonal frame), stack=C
        order,            # highest derivative order
        sum_over_probes=False,
):  # -> UT3Variations .data: (dU_tilde, dG_tilde, shape, masks); stack K_new + C

Apply the transpose 𝒥ᵀ of the all-modes entry-derivative (scatter c at index; pp packed, index unpacked – the one-hots are built packed inside entries._onehot_vectors).