# Events for 04/27/2023 from all calendars

## Working Seminar on Banach and Metric Spaces

**Time: ** 10:00AM - 11:30AM

**Location: ** BLOC 302

**Speaker: **Ryan Malthaner, Texas A&M University

**Title: ***An Introduction to Markov type*

## Number Theory Seminar

**Time: ** 2:30PM - 3:30PM

**Location: ** BLOC 302

**Speaker: **Agniva Dasgupta, Texas A&M University

**Title: ***Second Moment of Twisted Cusp Forms Along a Coset*

**Abstract: **We prove Lindelöf-on-average upper bound for the second moment of the L-function associated to a level 1 holomorphic cusp form, twisted along a coset of subgroup of the characters modulo q^{2/3} (where q = p^3 for some odd prime p). This result should be seen as a q-aspect analogue of Anton Good’s (1982) result on upper bounds of the second moment of cusp forms in short intervals.

## Noncommutative Geometry Seminar

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

**Location: ** BLOC 302

**Speaker: **Koichi Oyakawa, Vanderbilt University

**Title: ***Bi-exactness of relatively hyperbolic groups*

**Abstract: **Bi-exactness is an analytic property of groups defined by Ozawa and of fundamental importance to the study of operator algebras. In this talk, I will show that finitely generated relatively hyperbolic groups are bi-exact if and only if all peripheral subgroups are bi-exact. This is a generalization of Ozawa's result which claims that finitely generated relatively hyperbolic groups are bi-exact if all peripheral subgroups are amenable.