#13525: PALP/Laurent Normal Form
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Reporter: sjg10 | Owner: mhampton
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.4
Component: geometry | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: sjg10 | Merged in:
Dependencies: | Stopgaps:
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Changes (by trehn):
* cc: trehn (added)
Comment:
I have one brief remark about the method ''automorphisms()''. If I see
this correctly, you build the complete face lattice, compute its
automorphism group (i.e. the combinatorial automorphism group of the
polytope) and filter those permutations that correspond to
GL(n,ZZ)-transformations.
There seems to be already a method of ''Polyhedron'' that computes the
combinatorial automorphism group, so you could use this method. For the
combinatorial automorphisms of the polytope you don't need the whole face
lattice, but the bipartite vertex-facet-incidence graph is enough.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13525#comment:6>
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