** Kronecker tensor product. **

** KRON(X,Y) is the Kronecker tensor product of X and Y. **

** The result is a large matrix formed by taking all possible **

** products between the elements of X and those of Y. For **

** example, if X is 2 by 3, then KRON(X,Y) is **

** **

** **

** [ X(1,1)*Y X(1,2)*Y X(1,3)*Y **

** X(2,1)*Y X(2,2)*Y X(2,3)*Y ] **

** **