Matrix Tensor Product

 //This is a simple function that takes the tensor product of two square matrices, A and B,
//and places the result in the matrix prod. The matrix prod is resized to the appropriate
//dimension.
//The Tensor Product of two matrices arises in mathematics when two vector spaces are
//composed to make one larger vector space. It is used commonly in quantum mechanics
//when studying the interaction of two systems.
function MatrixTensorProduct(A,B,prod)
    wave A,B,prod
    
    variable n1,n2,n
    
    n1 = dimsize(A,0)
    n2 = dimsize(B,0)
    n = n1*n2
    
    Redimension/n=(n,n) prod
    
    prod = A[(floor(p/n2))][(floor(q/n2))]*B[(mod(p,n2))][(mod(q,n2))]
    
end

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