Tensor Product of Two Matrices coming from Algebra Representations

Question

Is there a command in sage to compute the tensor product of two Matrices coming from Algebra representations? In groups, x(v tensor w) = xv tensor xw, and the sage command Matrix1.tensor_product(Matrix2) appears to give the matrix corresponding to this. But in an algebra x(v tensor w) = xv tensor w + v tensor xw. How can I compute the corresponding matrix here?

Answer 1

Hi,

If M1 is your first matrix (of dimension n1) and M2 is your second matrix (of dimension n2), then the answer should be:

M1.tensor_product(identity_matrix(n2)) + 
identity_matrix(n1).tensor_product(M2)

Vincent

Tensor Product of Two Matrices coming from Algebra Representations

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