[SciPy-Dev] Strange results by eigs

Nils Wagner nwagner@iam.uni-stuttgart...
Thu Oct 20 12:57:40 CDT 2011


On Thu, 20 Oct 2011 19:34:03 +0200
  Pauli Virtanen <pav@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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