#14049: Matrix slices don't deal with zero rows or columns well
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Reporter: jason | Owner: jason, was
Type: defect | Status: positive_review
Priority: major | Milestone: sage-5.7
Component: linear algebra | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Karl-Dieter Crisman
Authors: Jason Grout | Merged in:
Dependencies: | Stopgaps:
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Changes (by kcrisman):
* status: needs_review => positive_review
* reviewer: => Karl-Dieter Crisman
Comment:
This looks good, passes tests etc. - yes, talk about premature
optimization!
My dumb question is whether we should, in fact, have such nonsensical
matrices. In particular
{{{
sage: m = identity_matrix(QQ, 4)[4:,:]
sage: m
[]
}}}
Should we instead have something that shows we have four columns? But of
course that wouldn't be about this ticket.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14049#comment:2>
Sage <http://www.sagemath.org>
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