Global Euler obstruction and polar invariants
Algebraic Geometry
2007-05-23 v1 Complex Variables
Abstract
For an affine complex algebraic singular space Y, we define a global Euler obstruction Eu(Y) which extends the Euler-Poincare characteristic of a nonsingular Y. Using Lefschetz pencils, we express Eu(Y) as alternating sum of global polar invariants.
Keywords
Cite
@article{arxiv.math/0310431,
title = {Global Euler obstruction and polar invariants},
author = {Jose Seade and Mihai Tibar and Alberto Verjovsky},
journal= {arXiv preprint arXiv:math/0310431},
year = {2007}
}
Comments
9 pages, 1 figure