Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5772727 | Journal of Pure and Applied Algebra | 2018 | 26 Pages |
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.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Bernt Ivar Utstøl Nødland,