id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
13725 sum complexes: another example of simplicial complexes jhpalmieri jhpalmieri "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!
" enhancement closed minor sage-5.6 algebraic topology fixed tscrim stumpc5 sage-5.6.beta2 John Palmieri Travis Scrimshaw N/A #12587