Event
Tobias Rossmann (University of Galway)
Friday, June 20, 2025 15:30to16:30
罢滨罢尝贰:听Symbolic enumeration of orbits
听
ABSTRACT:听In this talk, I will provide an overview of recent work on generating functions enumerating linear orbits and conjugacy classes of unipotent groups. We will study these generating functions by means of their linearised siblings, so-called "ask zeta functions", obtained by averaging over sizes of kernels in collections of matrices. The study of the latter functions involves a (sometimes surprising!) blend of techniques from algebra, combinatorics, and geometry.