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[Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of
From: |
Marco Caliari |
Subject: |
[Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem |
Date: |
Thu, 26 Apr 2018 06:09:38 -0400 (EDT) |
User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0 |
Update of bug #53719 (project octave):
Status: In Progress => Fixed
Open/Closed: Open => Closed
_______________________________________________________
Follow-up Comment #14:
I found it. which has to be set to 'LM' in the fortran code. My fault. Plain
arpack "converges" to wrong eigenvalues, too. This is maybe expected, since B
is not HPD. I think we should use the idea in section 3.2.2 of the
documentation. I will elaborate on it. Of course, after 4.4.
@Dan: some time ago I asked for help into trying to make a review and write a
sort of documentation of eigs.m->__eigs__.cc->eigs-base.cc->ARPACK, something
similar to https://arxiv.org/pdf/cs/0604006. If you are interested, please
privately write me.
I close the bug report.
_______________________________________________________
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- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, (continued)
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Rik, 2018/04/23
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/24
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, John W. Eaton, 2018/04/24
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Rik, 2018/04/24
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/25
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Dan Sebald, 2018/04/25
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/26
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/26
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Dan Sebald, 2018/04/26
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/26
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem,
Marco Caliari <=
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Dan Sebald, 2018/04/26
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Marco Caliari, 2018/04/27
- [Octave-bug-tracker] [bug #53719] eigs delivers wrong result in case of complex valued general eigenvalue problem, Dan Sebald, 2018/04/27