Thursday, April 6
Time: 3:30 p.m. Notice time change!
Location: 114 McAllister Building
Name: Amos Nevo
Affiliation: Technion, Haifa and IAS
Title: Ergodic theory and lattice points
Abstract: The problem of counting integral points on homogeneous algebraic varieties is a natural generalization of such clasical problems as the lattice point counting problem in the Euclidean or hyperbolic plane, or the counting of unimodular integral matrices. We will describe a general approach to such counting problems based on ergodic theory, which has the advantage of providing a rather good error estimate. We will then describe how to generalize this approach and develop the ergodic theory of lattice subgroups, a subject that has thus far remained beyond the reach of classical ergodic theory. We will illustrate the results by a number of applications. Based on joint work with Alex Gorodnik.