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Multiplicative Thom-Sebastiani for Bernstein-Sato polynomials

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arxiv 2402.04512 v4 pith:6KQVLO4N submitted 2024-02-07 math.AG

classification math.AG
keywords mathcalbernstein-satotimesalgebraicansweringbudurcomplexfunction
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abstract

We show that if $f\in \mathcal{O}_X(X)$ and $g\in \mathcal{O}_Y(Y)$ are nonzero regular functions on smooth complex algebraic varieties $X$ and $Y$, then the Bernstein-Sato polynomial of the product function $fg \in \mathcal{O}_{X\times Y}(X \times Y)$ is given by $b_{fg}(s)=b_f(s)b_g(s)$, answering a question of Budur and Popa.

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Cited by 1 Pith paper

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  1. A Hodge Theoretic generalization of $\mathbb{Q}$-Homology Manifolds I: General Case

    math.AG 2025-01 conditional novelty 6.0 of 10

    The Hodge rational homology level HRH(Z) generalizes Q-homology manifolds and is characterized by local cohomology, link cohomology, and V-filtration conditions.

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