#11248: SVD matrix decomposition may return a non-invertible "unitary" matrix
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Reporter: rbeezer | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-4.7
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by rbeezer):
Replying to [comment:8 slabbe]:
> I ran the one-liner test a little bit more systematically.
Perfect. Thanks!
(I keep thinking I can go and try something, and then realize it probably
won't fail on my machine.)
The other thing to do would be try a 3 x 4 in pure numpy so there is no
Sage involved, then I would say it is a numpy + compiler problem, though I
guess Sage could be building something wrong.
You could mimic the pure numpy above - just take a failing Sage example
and replace the complex part by something of the form {{{6j}}}.
Rob
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11248#comment:9>
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