For tame and free hyperplane arrangements, the zero loci of Bernstein-Sato ideals and the roots in [-1,0) of Bernstein-Sato polynomials are determined by the intersection lattice, with explicit combinatorial formulas.
Local Bernstein-Sa to ideals: algorithm and exam- ples
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Combinatorially Determined Zeroes of Bernstein--Sato Ideals for Tame and Free Arrangements
For tame and free hyperplane arrangements, the zero loci of Bernstein-Sato ideals and the roots in [-1,0) of Bernstein-Sato polynomials are determined by the intersection lattice, with explicit combinatorial formulas.