From http://trac.sagemath.org/sage_trac/ticket/8656#comment:6
Comment(by vbraun):
I've implemented all the fan/lattice basics, cohomology and Chern
clases,
Chow ring, divisors, Mori cone.
The current status is at [http://www.stp.dias.ie/~vbraun/Sage/],
documentation is at
I've posted my current files on
http://sage.math.washington.edu/home/novoselt/toric_varieties/
From a glance at Volker's code above, the most apparent difference in
approaches is that I was designing cones and fans to be standalone
(with the plan that they should go to sage/geometry eventually),
Hi Andrey (and sage-devel)
I'm using toric varieties for my research, mainly for Calabi-Yau
manifolds in string theory. So my goal for the toric varieties package
is to implement everything that is known ;-)
My current status is that I've implemented the following:
* The basic fan construction
