Return the commutation matrix K(m,n) which is the unique m*n by m*n matrix such that K(m,n) * MakeVector(A) = MakeVector(A.') for all m by n matrices A.
Itzuli K(m,n) konmutazio-matrizea, zeina m*n bider m*n matrize bakarra baita K(m,n) * MakeVector(A) = MakeVector(A.') betetzen duena m bider n A matrize guztientzat.