SMS scnews item created by Hannah Bryant at Thu 20 May 2021 1657
Type: Seminar
Modified: Wed 2 Jun 2021 1056; Thu 3 Jun 2021 1445
Distribution: World
Expiry: 3 Jun 2021
Calendar1: 3 Jun 2021 1530-1630
CalTitle1: SMRI Seminar: Onn ’Base change and representation growth of arithmetic groups’
Auth: hannahb@10.48.27.59 (hbry8683) in SMS-SAML

# SMRI Seminar: Onn -- Base change and representation growth of arithmetic groups

***REMINDER TO REGISTER - SEMINAR TODAY***
***ON CAMPUS LOCATION UPDATED - QUAD S225***

SMRI Seminar:
’Base change and representation growth of arithmetic groups’
Uri Onn (Australian National University)

When: Thursday Jun 3, 2021 03:30 PM-4:30 PM (AEST)
**UPDATED**Where: Quad S225 (University of Sydney staff, students & affiliates only) &
Via Zoom
Register Here:
https://uni-sydney.zoom.us/meeting/register/tZUodO6srTIoGNUInl06dFreSzDSDimsyJGW

Abstract: A group is said to have polynomial representation growth if the sequence
enumerating the isomorphism classes of finite dimensional irreducible representations
according to their dimension is polynomially bounded. The representation zeta
function of such group is the associated Dirichlet generating series. In this talk I
will focus on representation zeta functions of arithmetic groups and their
properties. I will explain the ideas behind a proof of a variant of the
Larsen-Lubotzky conjecture on the representation growth of arithmetic lattices in
high rank semisimple Lie groups (joint with Nir Avni, Benjamin Klopsch and
Christopher Voll) and analogous results for arithmetic groups of type A_2 in
positive characteristic (joint with Amritanshu Prasad and Pooja Singla).

Biography: Uri Onn is an A/Prof working at the Mathematical Science Institute at the
ANU. He graduated from the Technion (Haifa) and continued to postdoctoral positions
in Amsterdam, Paris, Mumbai and Jerusalem. He then became a faculty member at
Ben-Gurion University until 2017 when he moved to the Australian National
University. He takes keen interest in math and jazz.

Note: This seminar will be recorded (participants only when asking questions) and