#8987: Add support for rational polyhedral fans
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Reporter: novoselt | Owner: mhampton
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.4.4
Component: geometry | Keywords:
Author: Andrey Novoseltsev | Upstream: N/A
Reviewer: Volker Braun | Merged:
Work_issues: |
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Comment(by novoselt):
I'd rather not allow shifting away from the origin, for totally general
things users should use `Polyhedron`, which allows anything (except that
it also does not yet compute face lattice of non-strictly convex cones
;-)), but is not efficient enough to be in the base of toric varieties.
Although computing the "standard" dual cone certainly should be added in
the near future. I never needed them for computations so far, but at least
from the educational point of view they are important and that's why I
tried not enforce strict convexity in the design. Anyway, "good" cones
already create fans on their own ;-)
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8987#comment:29>
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