The Matrix subsystem has really grown up in the last few days since the 0.16 release, including easy-to-use methods to calculate Matrix eigenvalues. All kinds of other methods are now available, like

my $det1 = $A->det; # determinant my $det2 = abs $A; # determinant my $inv = $A->inverse; my @eigs = $A->eigenvalues; my ($eigenvalues, $eigenvectors) = $matrix->eigenpair; my ($eig1,$eig2) = @$eigenvalues; my ($u,$v) = @$eigenvectors;Compare this new script for calculating eigenvalues and eigenvectors of a nonsymmetric matrix to the old version. Yes, quite an improvement and quite pleasing to the eye now. Note that

**$A->eigenvalues;**returns a list of**Math::Complex**objects because in general the eigenvalues of a real matrix can be complex. Only if your matrix is symmetric are you guaranteed real eigenvalues.
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