Events for 02/12/2020 from all calendars

Number Theory 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: Event link

Groups and Dynamics Seminar

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 L₁-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 L₁. 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).

Topology Seminar

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.

Student/Postdoc Working Geometry Seminar

Time: 4:00PM - 5:00PM

Location: BLOC 624

Speaker: A. Pal, TAMU

Title: Border substitution after Blaeser and Lysikov

Committee P Meeting

Time: 4:00PM - 5:00PM

Location: BLOC 220

Graduate Student Organization Seminar

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.