#11302: Make it easier to construct a fan from a triangulation
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Reporter: vbraun | Owner: mhampton
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-4.7.1
Component: geometry | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: Volker Braun
Merged: | Dependencies:
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A common step in toric geometry is to construct the fan from some
triangulation. This patch adds a `fan()` method to the triangulation
class, so you can write:
{{{
sage: pc = PointConfiguration([(0,0), (1,0), (0,1), (-1,-1)], star=0,
fine=True)
sage: triangulation = pc.triangulate()
sage: fan = triangulation.fan(); fan
Rational polyhedral fan in 2-d lattice N
sage: fan.is_equivalent( toric_varieties.P2().fan() )
True
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11302>
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