CHARACTERISTIC (2) c. y yields the characteristic, own, or eigen values of its argument, arranged in ascending order on imaginary part within real within magnitude. An atom or list y is treated as the table ;y.
CHARACTERISTIC (0 2) 0 c. y is a diagonal matrix with the eigenvalues c. y on the diagonal. Also, _1 c. y and 1 c. y are the left and right eigenvectors. Thus, +/ . */ _1 0 1 c. y equals y.