Workshop II: Approximation Properties in Operator Algebras and Ergodic Theory - IPAM

Workshop II: Approximation Properties in Operator Algebras and Ergodic Theory

Part of the Long Program Quantitative Linear Algebra
April 30 - May 5, 2018

Schedule

All times in this Schedule are Pacific Time (PT)

Monday, April 30, 2018

Morning Session

08:30-09:20
Check-In/Breakfast (Hosted by IPAM)
09:20-09:30
Welcome and Opening Remarks
09:30-10:20
Narutaka Ozawa (Kyoto University)
Aut(F_5) has the property (T)
10:30-10:50
Break
10:50-11:40
Jesse Peterson (Vanderbilt University)
Connes' character rigidity conjecture for lattices in higher rank groups
11:50-12:10
Break

Afternoon Session

12:10-13:00
Remi Boutonnet (Institut de Mathematiques de Bordeaux)
A notion of spectral gap for infinite measure preserving actions
13:15-14:45
Lunch (on your own)
14:45-15:35
Tim Austin (University of California, Los Angeles (UCLA))
Entropy and the structure of measure-preserving transformations
15:45-16:05
Break
16:05-16:55
Gilles Pisier (Texas A&M University - College Station)
Completely Sidon sets in discrete groups and C*-algebras

Tuesday, May 1, 2018

Morning Session

08:30-09:30
Check-In/Breakfast (Hosted by IPAM)
09:30-10:20
Lewis Bowen (University of Texas at Austin)
Sofic homology invariants and the Weak Pinsker property
10:30-10:50
Break
10:50-11:40
Adrian Ioana (University of California, San Diego (UCSD))
Rigidity for von Neumann algebras of amalgamated free product groups
11:50-12:10
Break

Afternoon Session

12:10-13:00
Sorin Popa (University of California, Los Angeles (UCLA))
On the vanishing cohomology problem for cocycle actions of groups on II$_1$ factors
13:15-14:45
Lunch (on your own)
14:45-15:35
Ben Hayes (University of Virginia)
Mixing and spectral gap relative to Pinsker algebras of Sofic groups
15:45-16:00
Break
16:30-17:30
Vaughan Jones (Vanderbilt University)
Public Lecture - Green Family Lecture Series: “What is it about the Plane?”
17:30-18:45
Reception (Location: IPAM Lobby)

Wednesday, May 2, 2018

Morning Session

08:30-09:30
Check-In/Breakfast (Hosted by IPAM)
09:30-10:20
Assaf Naor (Princeton University)
Impossibility of metric dimension reduction in Schatten 1
10:30-10:50
Break
10:50-11:40
Wouter Van Limbeek (University of Michigan)
Rigidity of warped cones and coarse geometry of expanders
11:50-12:10
Break

Afternoon Session

12:10-13:00
Thomas Vidick (California Institute of Technology)
Unitary correlation sets
13:15-14:45
Lunch (on your own)
14:45-15:35
Gideon Schechtman (Weizmann Institute of Science)
Obstructions to embedding subsets of Schatten classes in Lp spaces
15:45-16:00
Break
16:30-17:30
Vaughan Jones (Vanderbilt University)
Green Family Lecture Series: “God May or May Not Play Dice but He Sure Loves a von Neumann Algebra”
17:30-06:45
Reception (Location: IPAM Lobby)

Thursday, May 3, 2018

Morning Session

08:30-09:30
Check-In/Breakfast (Hosted by IPAM)
09:30-10:20
Vaughan Jones (Vanderbilt University)
The Wysiwyg representations of the Thompson groups
10:30-10:50
Break
10:50-11:40
Emmanuel Breuillard (University of Cambridge)
Joint spectral radius and joint spectrum
11:50-12:10
Break

Afternoon Session

12:10-13:00
Marius Junge (University of Illinois at Urbana-Champaign)
Ubiquitous Connes' embedding problem
13:15-14:45
Lunch (on your own)
14:45-15:35
David Kerr (Texas A&M University - College Station)
Almost finiteness, Z-stability, and the small boundary property
15:45-16:05
Break
16:05-16:55
Alain Valette (Université de Neuchâtel)
Combinatorial hyperfiniteness for graph sequences

Friday, May 4, 2018

Morning Session

08:30-09:30
Check-In/Breakfast (Hosted by IPAM)
09:30-10:20
Miklos Abert (Renyi Institute of Mathematics)
A measured approach to sofic entropy
10:30-10:50
Break
10:50-11:40
Stefaan Vaes (KU Leuven )
Bernoulli actions of type III and L^2-cohomology
11:50-12:10
Break

Afternoon Session

12:10-13:00
Cyril Houdayer (Université Paris-Sud (Orsay))
Structure of bicentralizer algebras and inclusions of type III factors
13:15-14:45
Lunch (on your own)
14:45-15:35
Ionut Chifan (University of Iowa)
Some rigidity results for II$_1$ factors arising from wreath products of property (T) groups
15:45-16:05
Break
16:05-16:55
Thomas Sinclair (Purdue University)
On the classification of group von Neumann algebras

Saturday, May 5, 2018

Morning Session

08:30-09:30
Check-In/Breakfast (Hosted by IPAM)
09:30-10:20
Ilijas Farah (York University)
Rigidity for uniform Roe algebras
10:30-10:50
Break
10:50-11:40
Isaac Goldbring (University of California, Irvine (UCI))
Spectral gap and definability
11:50-12:10
Break

Afternoon Session

12:10-13:00
William Slofstra (University of Waterloo)
A group with subexponential hyperlinear profile
13:15-14:45
Lunch (on your own)
14:45-15:35
Hanfeng Li (SUNY Buffalo)
Garden of Eden and specification
15:45-16:05
Break
16:05-16:55
Masaki Izumi (Kyoto University)
The flow of weights and the Cuntz-Pimsner algebras.
17:10-17:10
Conclusion
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