## Dynamics, Geometry, & Groups Seminar

### Wednesday, February 24th, 2021

**Time:** 11:30 a.m** Place:**

**Speaker:** Idris Assani (University of North Carolina at Chapel Hill)

**Title:** Wiener Wintner dynamical systems.

**Abstract:** WW dynamical systems form a class of ergodic dynamical systems that we introduced and talked about in our 2003 book "Wiener Wintner ergodic theorems". This class offers simple proof of difficult pointwise results such as the return times and the a.e. double recurrence . We will present these simple proofs in this talk.