#13725: sum complexes: another example of simplicial complexes
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Reporter: jhpalmieri | Owner: jhpalmieri
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.6
Component: algebraic topology | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors: John Palmieri
Merged in: | Dependencies:
Stopgaps: |
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The attached patch adds a new collection of examples of simplicial
complexes called "sum complexes". I'm interested in them because their
homology can have large torsion groups relative to the number of vertices.
For example:
{{{
sage: simplicial_complexes.SumComplex(13, [0,1,2,3,5]).homology(3)
C3 x C237 x C706565607945
}}}
That's a very large torsion group for a complex with only 13 vertices!
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13725>
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