#12180: is_directed_acyclic(certificate=True) doesn't always give an ordering
back
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Reporter: mderickx | Owner: tbd
Type: defect | Status: positive_review
Priority: major | Milestone: sage-duplicate/invalid/wontfix
Component: combinatorics | Keywords: sd35
Work_issues: | Upstream: N/A
Reviewer: | Author: Maarten Derickx, David Harvey
Merged: | Dependencies:
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Changes (by ncohen):
* status: needs_review => positive_review
* milestone: sage-5.0 => sage-duplicate/invalid/wontfix
Comment:
Helloooooooo !!!
I think I fixed it already `:-)`
It must beeeee....... #11950 !
Currently, in Sage 5.0-beta2 :
{{{
sage: m=Matrix(3,[0, 1, 1, 0, 0, 0, 0, 1, 0])
sage: g=DiGraph(m)
sage: g.is_directed_acyclic(certificate=True)
(True, [0, 2, 1])
}}}
Nathann
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12180#comment:5>
Sage <http://www.sagemath.org>
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