#9245: Add library of toric varieties
----------------------------------+-----------------------------------------
Reporter: vbraun | Owner: AlexGhitza
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.5
Component: algebraic geometry | Keywords:
Author: Volker Braun | Upstream: N/A
Reviewer: Andrey Novoseltsev | Merged:
Work_issues: |
----------------------------------+-----------------------------------------
Comment(by novoselt):
Hmm... Now that the choice of rays and coordinates is nicely shown:
* Why does `A2` list basis vectors in the reverse order, (0,1) first and
then (1,0)? Wouldn't it be better if the ray matrix of affine spaces was
the identity one?
* For `P2` my choice of coordinates would be x-(1,0), y-(0,1), z-(-1,-1)
so that z is the "extra" coordinate compared to the affine space.
* For `P1xP1` I used (s:t) as coordinates on one copy and (x:y) on
another. Here it is (s:x) and (t:y). I don't really have a strong
preference, but it does bug me it this case that notation is different.
* `A2_Z2` got missed while adding ray matrices and coordinates.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9245#comment:23>
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.
