Local factorization and monomialization of morphisms

Details Local factorization and monomialization of morphisms Local factorization and monomialization of morphisms

1998-03-17

arxiv.org/abs/math/9803078v2

Mathematics

Algebraic Geometry

145 pages In the revision a new chapter (chapter 6) has been added which proves a stronger local factorization Theorem. The in

Scientific paper

Suppose that X to Y is a generically finite map of nonsingular varieties over a field of characteristic zero, and v is a valuation of the function field of X. We prove that it is possible to perform a sequence of monoidal transforms X' to X and Y' to Y so that X' to Y' is a monomial mapping at the center of v. We deduce from this that a birational morphism of nonsingular varieties can be factored along a valuation by a sequence of blowups and blowdowns with nonsingular centers.

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