The Bernstein–Sato divisibility conjecture for regular sequences

Let XX be the smooth variety and let f1,,frOX(X)f_1,\dots,f_r\in \mathscr{O}_X(X) be a regular sequence. Set g=f1frg=f_1\cdots f_r and let UU denote the open subset on which the relevant restriction gUg\vert_U is defined. Let bg(s)b_g(s) and bgU(s)b_{g\vert_U}(s) be the corresponding Bernstein–Sato polynomials. Bernstein–Sato divisibility conjecture. We have

bg(s)bgU(s)(s+r).b_g(s) \mid b_{g\vert_U}(s)(s+r).

Equivalently, the set II is either empty or the singleton 0\\{0\\}. This conjecture predicts that no factor s+r+js+r+j with j>0j>0 can occur without forcing additional integer roots in the restricted Bernstein–Sato polynomial, constraining the possible discrepancy between the global and restricted polynomials.

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Primary source

Bradley Dirks, Sebastian Olano and Debaditya Raychaudhury, “A Hodge Theoretic Generalization of Q-Homology Manifolds II: Local Complete Intersections”, arXiv:2607.25861 (2026).

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