#13725: sum complexes: another example of simplicial complexes
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Reporter: jhpalmieri | Owner: jhpalmieri
Type: enhancement | Status: positive_review
Priority: minor | Milestone: sage-5.6
Component: algebraic topology | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Travis Scrimshaw
Authors: John Palmieri | Merged in:
Dependencies: #12587 | Stopgaps:
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Changes (by jhpalmieri):
* status: needs_review => positive_review
Comment:
Your patch looks good to me. By the way, since writing my patch, I found
an example, `simplicial_complexes.SumComplex(13, [0,1,2,3,4,7])`, whose
fourth homology group is
{{{
C3 x C3 x C37209 x C14755222692546209667
}}}
It takes Sage several minutes to calculate this, so we shouldn't add it to
the examples, but it's interesting to see how large the torsion can be for
a complex with 13 vertices.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13725#comment:4>
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