#9326: Add cohomology of toric varieties
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Reporter: vbraun | Owner: AlexGhitza
Type: enhancement | Status: new
Priority: major | Milestone:
Component: algebraic geometry | Keywords:
Author: Volker Braun | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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This patch adds a cohomology ring to toric varieties. This is then used
for characteristic classes.
I'm using the usual description of the rational cohomology ring via the
Stanley-Reisner ideal of the fan. This does not work for singular varities
with worse than orbifold singularities. I don't have any good candidate
for the "space where the Chern classes live" in that case.
Applies on top of
* #9245: trac_9245_named_toric_varieties.py
* #8988: trac_8988_Kahlercone_lattice.patch
* #9296: trac_9296_lattice_computations_for_cones.patch
and their prerequisites...
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9326>
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