The local motivic monodromy conjecture for simplicial nondegenerate singularities

Matt Larson (Stanford)

Fri Oct 21, 19:00-20:00 (7 weeks ago)

Abstract: The monodromy conjecture predicts a relationship between the motivic zeta function of a hypersurface V(f), which governs the number of solutions to f = 0 (mod p^n) if f has integer coefficients and p is a sufficiently large prime, and the eigenvalues of the monodromy action on the cohomology of the Milnor fiber, which is a topological invariant of the complex hypersurface. When f is nondegenerate with respect to its Newton polyhedron, which is true for "generic" polynomials, there are combinatorial formulas for both the motivic zeta function and the eigenvalue of monodromy. I will describe recent results (joint with S. Payne and A. Stapledon) which prove a version of the monodromy conjecture for nondegenerate polynomials which have a simplicial Newton polyhedron.

algebraic geometry

Audience: researchers in the topic

Stanford algebraic geometry seminar

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