Generic Bernstein-Sato polynomial on an irreducible affine scheme

Details Generic Bernstein-Sato polynomial on an irreducible affine scheme Generic Bernstein-Sato polynomial on an irreducible affine scheme

2003-07-11

arxiv.org/abs/math/0307168v1

Mathematics

Algebraic Geometry

6 pages, no figures

Scientific paper

Given $p$ polynomials with coefficients in a commutative unitary integral ring $\mathcal{C}$ containing $\mathbb{Q}$, we define the notion of a generic Bernstein-Sato polynomial on an irreducible affine scheme $V \subset \text{Spec}(\mathcal{C})$. We prove the existence of such a non zero rational polynomial which covers and generalizes previous existing results by H. Biosca. When $\mathcal{C}$ is the ring of an algebraic or analytic space, we deduce a stratification of the space of the parameters such that on each stratum, there is a non zero rational polynomial which is a Bernstein-Sato polynomial for any point of the stratum. This generalizes a result of A. Leykin obtained in the case $p=1$.

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