[SciPy-Dev] Strange results by eigs
Nils Wagner
nwagner at iam.uni-stuttgart.de
Fri Oct 21 13:34:02 EDT 2011
On Fri, 21 Oct 2011 10:12:38 -0700
Jacob VanderPlas <vanderplas at astro.washington.edu>
wrote:
>>> The docstring of eigs is misleading in that context.
>>>
>>> M must represent a real symmetric matrix.
>>>
>> Yep, it should say hermitian instead of real sym. here.
>
> Actually, the piece of the documentation quoted here has
>to do with the second matrix supplied for the general
>eigenvalue problem. This matrix (M) must be real
>symmetric, as desribed in the ARPACK function
>documentation
> http://www.caam.rice.edu/software/ARPACK/UG/node137.html
>
> Jake
>
The Hermitian case is here
http://www.caam.rice.edu/software/ARPACK/UG/node138.html
Nils
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