#19193: is_planar() fails with an immutable graph
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Reporter: jmantysalo | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: graph theory | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by jmantysalo):
Here is the same without reference to posets:
{{{
sage: G = graphs.PetersenGraph()
sage: G1 = G.copy(immutable=True)
sage: G1.is_planar()
}}}
--> Same `ValueError`.
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Ticket URL: <http://trac.sagemath.org/ticket/19193#comment:2>
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