#11200: Add fibration check to FanMorphism
---------------------------+------------------------------------------------
Reporter: novoselt | Owner: mhampton
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.1
Component: geometry | Keywords: toric
Work_issues: | Upstream: N/A
Reviewer: | Author: Andrey Novoseltsev
Merged: | Dependencies: #10140, #10882
---------------------------+------------------------------------------------
Changes (by novoselt):
* dependencies: => #10140, #10882
Old description:
> The main point of this ticket is to add `FanMorphism.is_fibration`
> method.
>
> I have also added several related methods and adjusted
> containment/embedding methods of fans to accommodate sublattices and make
> their behaviour more uniform: now cone containment check is an attempt to
> embed the given cone into the fan.
>
> I have also started using `@cached_method` decorator since it is
> convenient and its speed and documentation issues should be resolved in
> the near future. Note, however, that some methods of fans still should
> use manual cache since they need to preprocess arguments first.
>
> Depends on #10882.
New description:
The main point of this ticket is to add `FanMorphism.is_fibration` method.
I have also added several related methods and adjusted
containment/embedding methods of fans to accommodate sublattices and make
their behaviour more uniform: now cone containment check is an attempt to
embed the given cone into the fan.
I have also started using `@cached_method` decorator since it is
convenient and its speed and documentation issues should be resolved in
the near future. Note, however, that some methods of fans still should use
manual cache since they need to preprocess arguments first.
--
Comment:
Rebased on top of new #10882.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11200#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
