
SCIENTIFIC PROGRAMS AND ACTIVITIES 

December 3, 2023  
OverviewThe primary focus of this workshop is on recent advances in the representation theory of real and padic groups and their applications. In particular, one of the areas in which substantial progress has been achieved is the harmonic analysis on homogeneous varieties. Within the past five years, there have been major breakthroughs in analysis on spherical varieties in the following two directions: (i) The work of KrötzSayagSchlichtkrull on the decay of matrix coefficients and homogeneous spaces that satisfy VAI (vanishing at infinity). Recent progress in this direction has led to uniform multiplicity bounds on the spectrum of real spherical varieties (KrötzSchlichtkrull). It is moreover expected to have important applications outside representation theory, such as asymptotics of integer points on homogeneous varieties and lattice counting. (ii) The work and conjectures of SakellaridisVenkatesh on the connection between the spectrum of a spherical variety, automorphic period integrals, and Arthur parameters. This substantial work brings together ideas from the geometric Langlands program, the geometry of spherical varieties "at infinity", and scattering theory. Several lowrank special cases of these conjectures have recently been solved in the work of GanGomez using the method of theta correspondence. The workshop will run for three full days and a morning session on the fourth day (Thursday morning  Sunday noon). It consists of two minicourses (given by Bernhard Krötz and Yiannis Sakellaridis) on the aforementioned themes, interspersed with several talks by senior as well as junior researchers on related topics in representation theory. The topics include (but are not limited to) analysis on symmetric spaces, infinite dimensional groups, and the relation between padic representation theory and Hecke algebras.
Location: Conference dinner: Schedule:

Thursday May 7, 2015  Location: ART 033  
Time  Speaker  Title 
9:009:30 
Registration/Coffee


9:3010:30  Bernhard Krötz (University of Paderborn)  Lecture 1: Volume growth on homogeneous spaces 
11:0012:00  Yiannis Sakellaridis (Rutgers University/NTU Athens)  Lecture 1: Geometry of toric and spherical varieties, and the theory of asymptotics 
14:0015:00  Paul Mezo (Carleton University)  Twisted endoscopy from the sheaftheoretic perspective 
15:3016:30  Guido Pezzini (FriedrichAlexanderUniversität ErlangenNürnberg)  Spherical subgroups of KacMoody groups 
16:3017:30  Ioan Badulescu (University of Montpellier, France)  Base change for non tempered representations 
Friday May 8, 2015  Location: FSS 1007  
Time  Speaker  Title 
8:309:30  Yiannis Sakellaridis (Rutgers University/NTU Athens)  Lecture 2: Plancherel decomposition and scattering theory 
9:3010:30  Bernhard Krötz (University of Paderborn)  Lecture 2: Real spherical spaces I: Geometry 
11:0012:00  KarlHermann Neeb (FAU ErlangenNürnberg)  Positive energy representations of gauge groups 
13:4514:45  Jessica Fintzen (Harvard University)  Stable vectors in the MoyPrasad ltration 
15:0016:00  Christoph Zellner (FAU ErlangenNürnberg)  Specifying smooth vectors for semibounded representations by single elements and applications 
16:0017:00  Manish Patnaik (University of Alberta)  On the theory of automorphic forms on loop groups 
Saturday May 9, 2015  Location: ART 033  
Time  Speaker  Title 
8:309:30  Bernhard Krötz (University of Paderborn)  Lecture 3: Real spherical spaces II: Harmonic Analysis 
9:3010:30  Gestur Olafsson (Louisiana State University)  Reflection positivity: representation theory meets quantum field theory 
11:0012:00  Julia Gordon (University of British Columbia)  Uniform in p estimates for orbital integrals 
14:0015:00  Matthew Dawson (Centro de Investigación en Matemáticas, A.C. (CIMAT))  Invariant Means and Harmonic Analysis on DirectLimit Groups 
15:3016:30  Max Gurevich (Technion)  Ladder representations and Galois distinction 
16:3017:30  Moshe Adrian (University of Toronto)  Langlands parameters for simple supercuspidal representations of classical groups 
Sunday May 10, 2015  Location: ART 033  
Time  Speaker  
8:309:30  Yiannis Sakellaridis (Rutgers University/NTU Athens)  Lecture 3: Local harmonic analysis and periods of automorphic forms 
9:3010:30  Camelia Karimianpour (University of Ottawa)  Representations of the nfold Covering Group of the Special Linear Group and Their Ktypes 
11:0012:00  Julee Kim (Massachusetts Institute of Technology)  Asymptotic behavior of supercuspidal characters and SatoTate equidistribution for families 
12:0013:00  Eitan Sayag (BenGurion University)  Decay and regularity on spherical spaces 
Full Name  University/Affiliation 
Adrian, Moshe  University of Toronto 
Ali, Abid  University of Alberta 
Alzaareer, Hamza  
Aubert, AnneMarie  UPMC 
Badulescu, Ioan  University of Montpellier, France 
Bardestani, Mohammad  University of Ottawa 
Behboodi, Gholamreza  University of Ottawa 
Binder, John  MIT 
Chakhar, Abdelkarim  Université Laval 
Chan, Kei Yuen  University of Amsterdam 
Christie, Aaron  University of Ottawa 
Coolimuttam Gopalakrishnan, Venketasubramanian  Ben Gurion university of the Negev 
Cunningham, Clifton  University of Calgary 
Das, Haridas  Concordia University 
Dawson, Matthew  Centro de Investigación en Matemáticas, A.C. (CIMAT) 
Filip, Ioan  Columbia University 
Fintzen, Jessica  Harvard University 
Gordon, Julia  University of British Columbia 
Gupta, Vishal  Max Planck Institute 
Gurevich, Max  Technion 
Hakim, Jeffrey  American University 
He, Xiao  Université Laval 
Islam, Rabib  University of Ottawa 
Kangni, Kinvi  Université Felix Houphouet Boigny 
Karimianpour, Camelia  University of Ottawa 
Kim, Julee  Massachusetts Institute of Technology 
Krotz, Bernhard  University of Paderborn 
Majeed, Asia  University of Manitoba 
Mezo, Paul  Carleton University 
Mitra, Arnab  Ben Gurion University of the Negev 
Moussaoui, Ahmed  IMJPRG 
Moustafa, Kopuider Elouahed  Oran University 
Murnaghan, Fiona  University of Toronto 
Neeb, KarlHermann  FAU ErlangenNürnberg 
Neher, Erhard  University of Ottawa 
Nevins, Monica  University of Ottawa 
Nguyen, Athena  University of British Columbia 
Noorzad, Abdul Sami  Karwan University 
Olafsson, Gestur  Louisiana State University 
Patnaik, Manish  University of Alberta 
Pezzini, Guido  FriedrichAlexanderUniversität ErlangenNürnberg 
Pike, Jeffrey  University of Ottawa 
Polak, Jason  McGill University 
Pushkas, Anna  University of Alberta 
QuirogaBrranco, Raul  Cimat 
Ransingh, Biswajit  Institute of Mathematical Sciences, Chennai 
Romano, Beth  Boston College 
Rumynin, Dmitriy  University of Warwick 
Saenz, Javier  CIMAT 
Sakellaridis, Yiannis  Rutgers University, Newark 
Salcedo, Emilio  CIMAT 
Salmasian, Hadi  University of Ottawa 
Savage, Alistair  University of Ottawa 
Sayag, Eitan  BenGurion University 
Sedano, Manuel  Centro de Investigación en Matemáticas 
Shen, Xin  University of Toronto 
Smith, Jerrod  University of Toronto 
Subag, Eyal  TelAviv University 
Tam, Kamfai  McMaster University 
Tian, Fangyang  University of Minnesota 
Tsai, ChengChiang  Harvard University 
Valdes, Juan Fernando  Centro de Investigación de Matemáticas 
Verma, Mahendra  IIT Bombay 
Wang, Junqi  Rutgers University 
Wong, Tian An  CUNY Graduate Center 
Zainoulline, Kirill  University of Ottawa 
Zellner, Christoph  FAU ErlangenNürnberg 
Zhou, Qiao  University of California, Berkeley 
Zurstraßen, Janina  Johannes GutenbergUniversität 