fv_kronecker_weights ==================== .. py:function:: t3toolbox.backend.fv_operations.fv_kronecker_weights(weights_A, weights_B) .. code-block:: python def fv_kronecker_weights(weights_A, weights_B): # each (up, down, left, right) -> Kronecker, ranks multiply Per-edge Kronecker product of two frame-weight 4-tuples (the Hadamard combine; ranks multiply). Last-axis outer product broadcasting the shared stack (A-major); NOT np.kron.