#9972: Add toric lattice morphisms
-------------------------------------+--------------------------------------
Reporter: novoselt | Owner: mhampton
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.6
Component: geometry | Keywords:
Author: Andrey Novoseltsev | Upstream: N/A
Reviewer: Volker Braun | Merged:
Work_issues: switch to FanMorphism |
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Comment(by novoselt):
So for `is_equivalent` optimization I propose inserting
{{{
if self == other:
return True
if self.ambient() == other.ambient():
return self.ambient_ray_indices() ==
other.ambient_ray_indices()
}}}
in the beginning of `Cone.is_equivalent`. Maybe with `==` replaced with
`is` in the `if` statements - both variants will work correctly, the
question is how many simple but potentially non-informative checks we want
to perform before using a generic algorithm.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9972#comment:19>
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