#15669: Errors with graph complement
----------------------------+----------------------------
Reporter: tscrim | Owner: tscrim
Type: defect | Status: new
Priority: major | Milestone: sage-6.1
Component: graph theory | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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We can't take the complement of an immutable graph:
{{{
sage: Gamma = graphs.PathGraph(5).copy(immutable=True)
sage: Gamma.complement()
NotImplementedError
}}}
which is because `copy(Gamma)` doesn't return a mutable copy.
They are plotting their original graph.
{{{
sage: G = graphs.PathGraph(5)
sage: G.plot()
sage: GC = G.complement()
sage: GC.plot() # Same as G.plot()
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/15669>
Sage <http://www.sagemath.org>
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