#12180: is_directed_acyclic(certificate=True) doesn't always give an ordering
back
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Reporter: mderickx | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-4.8
Component: PLEASE CHANGE | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Description changed by mderickx:
Old description:
> Currently we have:
>
> {{{
> sage: m=Matrix(3,[0, 1, 1, 0, 0, 0, 0, 1, 0])
> sage: g=DiGraph(m)
> sage: g.is_directed_acyclic(certificate=True)[1]
> [0, 1, 2, 1]
> }}}
New description:
Currently we have:
{{{
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, 1, 2, 1])
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12180#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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