Seminar Event Detail

RTG Seminar on Geometry, Dynamics and Topology

Date:  Wednesday, October 18, 2017
Location:  3866 East Hall (4:00 PM to 5:30 PM)

Title:  Expander graphs II: Geometric expanders

Abstract:   Last time we defined expanders and saw an explicit construction by Margulis using groups with Kazhdan's Property (T). This time we will explain a recent geometric construction of expanders by Vigolo, generalizing a different construction of Margulis, and discuss connections with spectral properties, Selberg's 3/16 theorem, and the classical Banach-Ruciewicz problem.


Speaker:  Wouter Van Limbeek
Institution:  U Michigan

Event Organizer:   Van Limbeek


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