eign — Non-symmetric Eigen Decomposition
eign with a single square argument matrix computes that matrix's
eigenvectors and eigenvalues. The results are returned as a list with
elements lvec, val and rvec which are the
left eigenvectors, eigenvalues and
right eigenvectors respectively. In general, these will be
complex quantities.
eign with two arguments computes the eigenvectors and
eigenvalues of the real generalized symmetric ( or complex generalized
Hermitian) definite eigenproblem. The eigenvalues and eigenvectors are
returned in a list as for the first form.
This routine forces use of the non-symmetric eigensolver — no checking
is done.
Subsections