#12208: LU decomposition gives wrong results on cyclotomic matrices (MacOSX-
specific)
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Reporter: dimpase | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-4.8
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by dimpase):
Replying to [comment:4 rbeezer]:
> Dear Dima,
>
> The code for this does not use any libraries, nor anything too advanced.
For the most part it is just field operations.
>
> Just as an experiment, you could try the {{{pivot}}} options with your
example. {{{pivot='partial'}}} would basically bypass a call to
{{{abs()}}}. Results are cached, so be aware of that when testing.
>
Hi Rob,
{{{pivot='partial'}}} gives the wrong result, while {{{pivot='nonzero'}}}
computes the things correctly.
Dima
> Rob
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12208#comment:5>
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