[SciPy-Dev] Strange results by eigs
Nils Wagner
nwagner at iam.uni-stuttgart.de
Thu Oct 20 13:57:40 EDT 2011
On Thu, 20 Oct 2011 19:34:03 +0200
Pauli Virtanen <pav at iki.fi> wrote:
> 20.10.2011 18:53, Nils Wagner kirjoitti:
> [clip]
>> The eigenvalues returned by eig and eigs are completely
>> different.
>
> The matrix B must be hermitian positive (semi-)definite
>for `eigs`.
>
> --
> Pauli Virtanen
It means that there is no check for B inside eigs.
IMHO, a warning should be raised if B is not hermitian
positive (semi-)definite.
Nils
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