#9470: Switch toric varieties to enhanced fans
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Reporter: novoselt | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.5
Component: algebraic geometry | Keywords:
Author: Andrey Novoseltsev | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by newvalueoldvalue):
* cc: vbraun (added)
* status: new => needs_review
* author: => Andrey Novoseltsev
Comment:
Hi Volker,
This patch should let you to easily add cohomology methods to cones and
have everything together in the `toric_variety` module.
I have modified the code of `EnhancedCone` a little with the idea that if
you have a chain of enhanced fans
Fan ---> EFan1 ---> EFan2
and, say, intersect two cones belonging to `EFan2`, then three cones will
be created replicating the same chain
Cone ---> ECone1 ---> ECone2
I am not completely sure if this is necessary, but it will be consistent
in the sense that "base cone" of ECone2 will belong to "base fan" of its
fan.
Thank you,
Andrey
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9470#comment:1>
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