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Global Euler obstruction and polar invariants

Authors
  • Seade, Jose
  • Tibar, Mihai
  • Verjovsky, Alberto
Type
Published Article
Publication Date
Oct 28, 2003
Submission Date
Oct 28, 2003
Identifiers
DOI: 10.1007/s00208-005-0681-z
arXiv ID: math/0310431
Source
arXiv
License
Unknown
External links

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.

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