#13052: Positive definte check for matrices over RDF/CDF
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Reporter: rbeezer | Owner: jason, was
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-5.1
Component: linear algebra | Resolution:
Keywords: sd40.5 | Work issues:
Report Upstream: N/A | Reviewers: Dan Drake, Andrey Novoselt
Authors: Rob Beezer | Merged in:
Dependencies: #13035 | Stopgaps:
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Changes (by rbeezer):
* reviewer: => Dan Drake, Andrey Novoselt
Old description:
> Having a Cholesky decomposition is equivalent to being positive definite.
> With #13035 this is a cheap feature and a cheap computation, and will
> maintain feature sets with the exact case.
>
> '''Depends:''' #13035
>
> '''Apply:'''
> 1. [attachment:trac_13052-is-positive-definite-RDF.patch]
New description:
Having a Cholesky decomposition is equivalent to being positive definite.
With #13035 this is a cheap feature and a cheap computation, and will
maintain feature sets with the exact case.
'''Depends:''' #13035
'''Apply:'''
1. [attachment:trac_13052-is-positive-definite-RDF-v2.patch]
--
Comment:
Thanks, Dan and Andrey. v2 patch is standalone patch.
* Rebased with missed reviewer patch from other ticket.
* Double "square" is gone.
* `round()` on all integer determinants and output reformatted
Thanks for all your work on the Cholesky stack!
Rob
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13052#comment:6>
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