The monodromy conjecture for Bernstein–Sato polynomials of ideals

Let XX be a smooth affine variety, let ZZ be a closed subscheme defined by an ideal IOXI\subset\mathcal O_X, and let xZx\in Z. Write bI(s)b_I(s) and bI,x(s)b_{I,x}(s) for the global and local Bernstein–Sato polynomials, and ZX,Ztop(s)Z^{\operatorname{top}}_{X,Z}(s) and ZX,Z,xtop(s)Z^{\operatorname{top}}_{X,Z,x}(s) for the global and local topological zeta functions associated with (X,Z)(X,Z). Monodromy conjecture. The products

bI(s)ZX,Ztop(s)andbI,x(s)ZX,Z,xtop(s)b_I(s)\cdot Z^{\operatorname{top}}_{X,Z}(s)\quad\text{and}\quad b_{I,x}(s)\cdot Z^{\operatorname{top}}_{X,Z,x}(s)

have no poles. This is a version of the Monodromy Conjecture relating poles of topological zeta functions to roots of Bernstein–Sato polynomials for ideals.

Sources & referencesView supporting material

Primary source

Nero Budur and An-Khuong Doan, “Deformations with cohomology constraints: a review”, arXiv:2311.08052 (2023).

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