#7052: [with patch, needs review] Chromatic polynomial calculated incorrectly
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Reporter: AJonsson | Owner: rlm
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.1.3
Component: graph theory | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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Changes (by AJonsson):
* priority: minor => major
Comment:
Found the wonderful graphs.LCFGraph() function, so it became clear to me
that a constructor for the McGee graph was redundant, when a simple
graphs.LCFGraph(24, [12,7,-7], 8) worked just as fine.
New version of the patch just changes int to long long at the necessary
places, and adds a test of the value of the chromatic polynomial at x=2,
to see that it is 0 now.
Changing priority to major, as this clearly will happen to any graph that
is sufficiently large.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7052#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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