utv_apply

t3toolbox.backend.utv_sampling.utv_apply(ww, frame_data, variations_data)

def utv_apply(
        ww,               # apply vectors, len=d, ith elm_shape=W+(Ni,)
        frame_data,       # UT3Frame .data
        variations_data,  # UT3Variations .data
):  # -> scalar apply, shape=W+K+C

Apply a uniform tangent vector in all modes (the bare 𝒥; a scalar per stack element).