
SCIENTIFIC PROGRAMS AND ACTIVITIES 

October 20, 2016  
Fields
Workshop around Connes' Embedding Problem

Registration on site Fee: $50 for faculty, $30 for postdocs, $20 for students. Fee waived for invited speakers 
Schedule 
Participant List  
Abstracts  Accommodation and Travel to Ottawa 
The embedding conjecture was formulated by A. Connes in the seventies. Technically, the question asks whether any finite type von Neumann algebra can be embedded into the ultrapower of the hyperfinite factor. This classification question can be rephrased as a noncommutative moment problem; equivalently, it asks whether generators of any tracial von Neumann probability space admit a matrix model.
Many results of von Neumann algebras theory could be obtained assuming the conjecture. In addition, many striking equivalent statements have been obtained, and no example of non embeddable von Neumann algebra is known so far. While many tried to disprove this conjecture, many new techniques, using noncommutative algebra, real algebraic geometry, representation theory and random matrices have been introduced over the last years.
We believe that we are at a good time to make a synthesis of what
the new research trends in this area are: the purpose of this meeting
is to create an occasion for the experts to meet, but also for the
students to learn in a very accessible way the most recent trends
of one of the most important problems of operator algebras.
Friday May 16  SITE A0150  800 King Edward  
8:459:15:  Registration & coffee 
9:1510:00  Thierry Giordano (uOttawa) Introduction to von Neumann algebras 
10:1511:15  Vladimir Pestov (uOttawa) Ultrafilters and ultraproducts for beginners 
11:1511:45  coffee  SITE J0106 
11:4512:45:  Nate Brown, Penn State University Talk 1: Connes' Embedding Problem: An Introduction. 
12:4514:00: 
Pizzalunch  Math Department KED  585 King Edward 
14:0015:00:  Gabor Elek, The Alfred Renyi Institute
of Mathematics Talk 1: Sofic groups and Connes' Embedding Problem 
15:1516:15:  Ilijas Farah, York University Incompleteness, independence, and absoluteness or: When to call a set theorist? 
Saturday May 17  SITE H0104  800 King Edward  
9:1510:15: 
Nate Brown, Penn State University 
10:1510:45: 
coffee  SITE J0106 
10:4511:45: 
Wing Suet Li, Georgia Institute of Technology 
12:0013:00: 
Gabor Elek, The Alfred Renyi Institute of Mathematics

13:0014:30: 
Lunch break 
14:3015:30: 
Ken Dykema, Texas A&M University 
15:3016:00: 
coffee  SITE J0106 
16:0017:00: 
Hari Bercovici, Indiana University 
17:0018:00: 
Discussion 
19:30?:  Restaurant (to be specified) 
Sunday May 18  SITE AO150  800 King Edward  
9:1510:15:  Markus Schweighofer, Université
de Rennes 1 A purely algebraic formulation of Connes' embedding conjecture 
10:1510:45:  coffee  SITE J0106 
10:4511:45  Hari Bercovici, Indiana University Schubert calculus for the practical person 2 
12:0013:00  Igor Klep, University of Ljubljana Sums of hermitian squares and the BMV conjecture 
Fullname  University/Affiliation 
Argerami, Martin  University of Regina 
Banica, Teodor  Univ. Toulouse 3 
Bercovici, Hari  Indiana University 
Brown, Nate  Pennsylvania State University 
Ciuperca, Alin  University of Toronto 
Collins, Benoît  University of Ottawa 
Darras, Mohammed  University of Ottawa 
de Lataillade, Joachim  University of Ottawa 
Dykema, Ken  Texas A&M University 
Elek, Gabor  Hungarian Academy of Sciences 
Elliott, George  University of Toronto 
Farah, Ilijas  York University 
Giordano, Thierry  University of Ottawa 
Hajji, Wadii  University of Ottawa 
Handelman, David  University of Ottawa 
Ivanov, Nikolay  Queen's University 
Kalantar, Mehrdad  Carleton University 
Kengne, Emmanuel  University of Ottawa 
Klep, Igor  University of California, San Diego 
Kousha, Termeh  University of Ottawa 
Lei, Tao  York University 
Li, Wing Suet  Georgia Institute of Technology 
Mbombo Dempowo, Brice Rodrigue  University of Ottawa 
Mingo, James A.  Queen's University 
Ng, Ping Wong  University of Louisiana at Lafayette 
Pestov, Vladimir  University of Ottawa 
Poulin, Denis  Carleton University 
Redelmeier, Emily  Queen's University 
Saad, Nadia  University of Ottawa 
Santiago Moreno, Luis  University of Toronto 
Sasyk, Roman  University of Ottawa 
Schweighofer, Markus  Université de Rennes 1 
Speicher, Roland  Queen's University 
Starling, Charles  University of Ottawa 
Wang, JiunChau  Indiana University 
TO BE CONFIRMED  
Novak, Jonathan  Queen's University 
Viola, Maria Grazia  Fields Institute 