“…In this work, we will make an intensive use of the symmetrized second kind Kronecker power (see [3], p. 236) of a symmetric and square matrix A = (a i, j ) 1 i, j=0 of dimension 2. Consider the linear transformation defined by means of z = A t, where t = (t 1 , t 2 ) t , and z = (z 1 , z 2 ) t .…”