#13018: Positive definite check for exact matrices
----------------------------------+-----------------------------------------
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
Authors: Rob Beezer | Merged in:
Dependencies: #12966 | Stopgaps:
----------------------------------+-----------------------------------------
Old description:
> Implements an "is_positive_definite()" method for matrices over exact
> rings.
>
> '''Depends:'''
> 1. #12966
>
> '''Apply:'''
> 1. [attachment: trac_13018-is-positive-definite-v1.patch]
New description:
Implements an "is_positive_definite()" method for matrices over exact
rings.
'''Depends:'''
1. #12966
'''Apply:'''
1. [attachment: trac_13018-is-positive-definite-v2.patch]
--
Comment (by rbeezer):
Thanks, Dan. Standalone "v2" patch fixes the grammar. For matrices that
are positive definite the doctest now includes the (positive) determinants
of the leading principal submatrices. For those that are not positive
definite there is an example vector violating the defining condition
(which was a '''great''' suggestion).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13018#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
