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# Events for 02/12/2020 from all calendars

## Number Theory Seminar

## Groups and Dynamics Seminar

## Topology Seminar

## Student/Postdoc Working Geometry Seminar

## Committee P Meeting

## Graduate Student Organization Seminar

**Time:** 1:45PM - 2:45PM

**Location:** BLOC 220

**Speaker:** Sheng-Chi Liu, Washington State University

**Title:** *A GL_3 Analog of Selberg's Result on S(t)*

**Abstract:** The function S(t) appears in an asymptotic formula for counting the number of nontrivial zeros of the Riemann zeta function with imaginary part less than t. It was shown by Littlewood that the function has a lot of cancellation on the average over t. Later Selberg studied the moments of S(t) and the moments of the analog function associated with a Dirichlet L-function for a primitive Dirichlet character. A GL_2 analog of Selberg's result was proved by Hejhal and Luo. In this talk we will discuss a GL_3 analog of such results. This is joint work with Shenhui Liu.

**URL:** *Link*

**Time:** 3:00PM - 4:00PM

**Location:** BLOC 220

**Speaker:** Florent Baudier, Texas A&M

**Title:** *On the metric geometry of the planar lamplighter group*

**Abstract:** In 2011, Naor and Peres showed that the L_{1}-compression of the lamplighter group over a group of polynomial growth is 1. In particular, Naor-Peres embedding resul applies to the planar lamplighter group, and they raised the question whether the planar lamplighter group admits a bi-Lipschitz embedding into L_{1}. I will briefly discuss the connection of the embedding problem with Jones' traveling salesman theorem and present some recent progress obtained in collaboration with P. Motakis (UIUC), Th. Schlumprecht (Texas A&M), and A. Zsàk (Peterhouse, Cambridge).

**Time:** 4:00PM - 5:00PM

**Location:** BLOC 605AX

**Speaker:** Filippo Mazzoli, University of Luxembourg

**Title:** *Constant Gaussian curvature surfaces in quasi-Fuchsian manifolds*

**Abstract:** In this talk I will describe how constant Gaussian curvature (CGC) surfaces interpolate the structures of the pleated boundary of the convex core and of the boundary at infinity of a quasi-Fuchsian manifold, and I will present a series of consequences of this phenomenon, such as a description of the renormalized volume in terms of the CGC surfaces foliations, and a generalization of McMullen's Kleinian reciprocity theorem.

**Time:** 4:00PM - 5:00PM

**Location:** BLOC 624

**Speaker:** A. Pal, TAMU

**Title:** *Border substitution after Blaeser and Lysikov*

**Time:** 4:00PM - 5:00PM

**Location:** BLOC 220

**Time:** 4:00PM - 5:00PM

**Location:** BLOC 628

**Speaker:** Konrad Wrobel

**Title:** *Games People Play and Winning Strategies*

**Abstract:** Given an infinite game on the Cantor space, an interesting question to ask is whether there exists a winning strategy for one of the players. A famous theorem due to Martin states that there is a winning strategy for one of the players if the payoff set is Borel. I'll discuss some background on games and Borel sets before discussing some applications, possibly including the fact that analytic sets have the perfect set property and the Baire property.

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