fv_kronecker_weights

t3toolbox.backend.fv_operations.fv_kronecker_weights(weights_A, weights_B)

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.