#13244: make some simplicial complexes faster
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Reporter: jhpalmieri | Owner: jhpalmieri
Type: enhancement | Status: new
Priority: minor | Milestone: sage-5.3
Component: algebraic topology | Keywords: sd40 simplicial
Work issues: | Report Upstream: N/A
Reviewers: | Authors: John Palmieri
Merged in: | Dependencies:
Stopgaps: |
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A few simplicial complexes in the file `sage/homology/examples.py` are
defined by computing orbits of a some lists under the action of a specific
group. This can take a second or two, so we can save time by doing the
computations once and then just using the explicitly computed orbits after
that. The attached patch does this: it moves the G-orbit code out of the
methods for the appropriate simplicial complexes, replacing it with an
explicit list of facets. It stores the G-orbit code as a stand-alone
function, in case anyone wants to see how the facets were constructed in
the first place.
This also adds a minimal triangulation of the Klein bottle, and it uses
proper reST formatting for references.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13244>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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