#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 vbraun):
I'm not sure if I understand the problem; You think its confusing to have
`Cone.face_lattice()` and `Fan.cone_lattice()` that do similar, but not
quite the same, things? I think thats ok, one is for working with a single
cone and the other is for working with fans. In particular, for toric
geometry we are only interested in the cone lattice.
If you want to remove the `ConeFace` then thats fine with me, and
returning a fan for the `Cone.face_lattice()` would make sense. There
might be some issue with a circular dependency. But I don't think that its
too confusing to have both, in particular since operations on fans will
never return a `ConeFace` and operations on a plain `Cone` never return a
fan.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8987#comment:22>
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