Irregular fibers of complex polynomials in two variables

Details Irregular fibers of complex polynomials in two variables Irregular fibers of complex polynomials in two variables

2001-10-05

arxiv.org/abs/math/0110059v1

Mathematics

Algebraic Geometry

12 pages, LaTex2e

Scientific paper

For a complex polynomial in two variables we study the morphism induced in homology by the embedding of an irregular fiber in a regular neighborhood of it. We give necessary and sufficient conditions for this morphism to be injective, surjective. Particularly this morphism is an isomorphism if and only if the corresponding irregular value is regular at infinity. We apply these results to the study of vanishing and invariant cycles.

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