Local Euler obstructions of toric varieties
Algebraic Geometry
2017-11-08 v3
Abstract
We use Matsui and Takeuchi's formula for toric A-discriminants to give algorithms for computing local Euler obstructions and dual degrees of toric surfaces and 3-folds. In particular, we consider weighted projective spaces. As an application we give counterexamples to a conjecture by Matsui and Takeuchi. As another application we recover the well-known fact that the only defective normal toric surfaces are cones.
Cite
@article{arxiv.1610.02430,
title = {Local Euler obstructions of toric varieties},
author = {Bernt Ivar Utstøl Nødland},
journal= {arXiv preprint arXiv:1610.02430},
year = {2017}
}