#15240: Switch lattice polytopes to point collections
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Reporter: novoselt | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.0
Component: geometry | Resolution:
Keywords: toric sd53 | Merged in:
Authors: Andrey | Reviewers:
Novoseltsev | Work issues:
Report Upstream: N/A | Commit:
Branch: u/novoselt/lp2pc | 9e2512e40f2f3428b63e7dc46170a207bcf36ccc
Dependencies: | Stopgaps:
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Comment (by vbraun):
Replying to [comment:4 novoselt]:
> Hey Volker - I think it would be nice to deprecate in this ticket
everything that we don't want to keep except for the way how faces are
handled (which I'd rather do in a follow up ticket).
Sounds good!
> What about "desc"? I'd like to print polytopes similar to cones/fans:
"3-d lattice polytope in 4-d lattice N", perhaps with "lattice" replaced
by "reflexive" automatically and with the index for 2- and 3-d cases.
Should then "desc" be gone and those who really want can use Sage standard
"rename"?
+1
> Also, I am not sure what the output of "normal_form" should be - keeping
it as a matrix does not seem a good choice.
A matrix isn't totally strange, after all the normal form is a version of
hermite normal form together with permutation of vertices.
If you want to return it as another `LatticePolytope` then the constructor
should keep the vertices in the specified order. The ambient lattice
should be the same as the lattice of the original polytope, imho.
> `projective_space` and `octahedron(2)` better disappear as well, not
sure how did I come up with "octa" for vertices other than 8!
Should probably be `cross_polytope` ;-)
--
Ticket URL: <http://trac.sagemath.org/ticket/15240#comment:6>
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