#14354: simplicial complexes: add_face doesn't clear enough cached data
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Reporter: jhpalmieri | Owner: tbd
Type: defect | Status: new
Priority: blocker | Milestone: sage-5.9
Component: PLEASE CHANGE | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors: John Palmieri
Merged in: | Dependencies:
Stopgaps: |
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Running `add_face` on a simplicial complex doesn't clear various data
related to homology calculations:
{{{
sage: T = SimplicialComplex([range(1,5)]).n_skeleton(1)
sage: T.homology()
{0: 0, 1: Z x Z x Z}
sage: T.add_face([1,2,3])
sage: T.homology() # should be free of rank 2
{0: 0, 1: Z x Z x Z, 2: 0}
sage: SimplicialComplex(T.facets()).homology()
{0: 0, 1: Z x Z, 2: 0}
}}}
See also [http://ask.sagemath.org/question/2391/homology-of-simplicial-
complexes].
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14354>
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