# [PYTHON MATRIX-SIG] Bug in LinearAlgebra

**James Crotinger
**
jac@gandalf.llnl.gov

*Tue, 15 Oct 96 14:08:56 PDT*

tim@lassi.ece.uiuc.edu writes:
> ================
> 1. 0. 0.
> 0. 1. 0.
> 0. 0. 1.
>
> 1. 1. 1. # These are not the eigenvalues, where is -1.
Singular values are, by definition, positive. The nonzero singular
values are the positive square root of the eigenvalues of A' * A
(where ' denotes transpose).
But the determinant is indeed wrong.
Jim
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