Workshop on Dynamical Systems and Operator Algebras

May 30 - June 1, 2016, University of Ottawa

Location: Desmarais Building, Room 1140

Overview

This workshop will be the fifth international mathematical meeting arising from a fruitful collaboration between the mathematics departments of the Universidade Federal de Santa Catarina, Florianopolis, Brazil, and the University of Ottawa, as supported by a collaboration agreement between the mathematics departments of these institutions. Both departments have strong research groups in dynamical systems and operator algebras. Recent years see the emergence of two more nodes of the collaborative network: l'Université d'Orléans (France) and Universität Münster (Germany). Past events:

Fields Institute Extended Workshop on Groups and Group Actions in Operator Algebra Theory, University of Ottawa, 12-16 July, 2010.
2011 Brazilian Operator Algebra Symposium (BOAS 2011), Universidade Federal de Santa Catarina, Jurere, Florianopolis, SC, Brazil, January 31 – February 4, 2011.
SFB-Workshop on Groups, Dynamical Systems and C*-Algebras, Münster, August 20--24, 2013.
International Conference on Functional Analysis and Dynamical Systems (FADYS), Praia dos Ingleses, Florianopolis, February 24–27, 2015.

This workshop is being coordinated with the Workshop on New Directions in Inverse Semigroups, which will immediately follow ours. We encourage all participants to plan their stay so as to participate in both workshops.

Welcome Reception and Location

Sunday, May 29th, 2016, from 6:00-9:00 pm.

All the talks are taking place in Desmarais building (code DMS on the campus map), room DMS 1140.

Welcome reception will be held in the tea room of the Mathematics Building, at 585 King Edward Avenue (code KED on the map), ground door, on the left as you enter.

Schedule

Monday, May 30th, 2016
09:00 to 09:40	Registration and coffee
09:45 to 09:50	Opening Ceremony
09:45 to 10:30	How well behaved are well-behaved C-algebras? George Elliott, University of Toronto Location:*
10:30 to 11:00	An intrinsic algebraic characterization of C-simplicity for discrete groups Matthew Kennedy, University of Waterloo Location:*
11:00 to 11:30	Inverse semigroups, groupoids and their actions on C-algebras Alcides Buss, Federal University of Santa Catarina Location:*
11:30 to 12:00	K-theoretical invariants of Wieler-Smale spaces arising from a local homeomorphism Mike Whittaker, University of Glasgow Location:
14:00 to 14:30	A new bicommutant theorem Ilijas Farah, York University Location:
14:30 to 15:15	K-theoretic Dynamics and the C-Connes Embedding Problem Timothy Rainone, University of Waterloo Location:*
15:00 to 15:30	Hyperlinear and sofic equivalence relations Luiz Cordeiro, University of Ottawa Location:
15:30 to 16:00	Coffee Break
16:00 to 16:30	Generalizations of the Curtis-Hedlund-Lyndon Theorem for shift spaces over infinitely countable alphabets Marcelo Sobottka, Federal University of Santa Catarina Location:
16:30 to 17:00	Covariant injectivity of locally compact quantum groups, and applications Matthias Neufang, Carleton University Location:
17:00 to 17:30	Finitely generated Banach modules over commutative von Neumann algebras Arkady Kitover, Rider University Location:

Tuesday, May 31st, 2016
09:00 to 10:00	Partial actions and subshifts (Part I) Ruy Exel, Federal University of Santa Catarina Location:
10:00 to 10:30	Coffee Break
10:30 to 11:30	C-algebras associated with 'ax+b'-semigroups Joachim Cuntz, University of Muenster Location:*
11:30 to 12:00	Random walks on Bratteli diagrams Jean Renault, Université d'Orléans Location:
14:00 to 14:30	Thompson's group F is not Liouville Vadim Kaimanovich, University of Ottawa Location:
14:30 to 15:15	Ergodic Theory Approach to the Description of Group Characters Kostya Medynets, United States Naval Academy Location:
15:00 to 15:30	A problem of Ellis Dana Bartosova, University of Sao Paulo Location:
15:30 to 16:00	Coffee Break
16:00 to 16:30	Ramsey Classes of Ordered Directed Graphs Micheal Pawliuk, University of Toronto Location:
16:30 to 17:00	Intrinsic groups of double crossed products Sutanu Roy, Carleton University Location:
17:00 to 17:30	C-Algebra Distances Tristan Bice, Federal University of Bahia Location:*

Wednesday, June 1st, 2016
09:00 to 10:00	Partial actions and subshifts (Part II) Ruy Exel, Federal University of Santa Catarina Location:
10:00 to 10:30	Coffee Break
10:30 to 11:30	An introduction to Boolean inverse semigroups Mark Lawson, Heriot-Watt University Location:
11:30 to 12:00	Weak containment and exactness for groupoids and semigroups Claire Anantharaman, Université d'Orléans Location:
14:00 to 14:30	Ultragraphs and shift spaces over infinite alphabets Daniel Gonçalves, UFSC Location:
14:30 to 15:00	On the closed convex hull of unitary orbits in certain C-algebras. (2) Real rank zero for purely infinite corona algebras. Ping Wong Ng, University of Louisiana at Lafayette Location:*
15:00 to 15:30	The diagonal C-subalgebra of the C-algebra associated to a labelled space Giuliano Boava, Universidade Federal de Santa Catarina (UFSC) Location:

Scientific Background

Both already existing and future interactions between the Canadian and Brazilian schools Operator Algebras and related topics of Analysis are naturally centred around the overlapping research directions of common interest to both schools. The focal point of these interests has been chosen as the main theme of the workshop.

However, in no way should the workshop be viewed as a mere binational event: it is open to everybody, and every mathematician is welcome to participate. In particular, we will strongly encourage the participation of graduate students from across Canada.

Among the major topics of interest for the workshop will be the interaction between groupoids and C*-algebras. This study is an important part of the research activities of members of the analysis groups of both universities, and this is the pivot point of such directions of current activity as exactness and amenability at infinity in the context of groups, C*-algebras, and groupoids.

Another important topic of the extended workshop will be the dynamics of large groups and its connection with many important questions in operator algebras (e.g. Connes' embedding conjecture), dynamical systems (e.g. sofic groups) and descriptive set theory (e.g. Ramsey theory).

Keynote Speaker

Ruy Exel (UFSC) will deliver a mini-course of two one-hour lectures on Tuesday and Wednesday mornings.

Abstract submission

We invite the conference participants to submit their abstracts at http://at.yorku.ca/cgi-bin/abstract/submit/cbmj-01

Please note that the 25-minute talks from invited speakers will be included in the program, while (possibly shorter) contributed talks will be considered by the Organizers for inclusion depending on the space available.

The submitted abstracts can be viewed at: http://at.yorku.ca/cgi-bin/abstract/cbmj-01

Funding Application

Please use this form to be considered for funding. Note that funding is limited, and priority will be given to students and postdoctoral fellows who do not have access to other sources of funding.

The deadline for applying for financial support is March 18, 2016. Successful applicants will be notified shortly after this deadline.

Registered Participants

Name	Affiliation
Manal Alharbi	University of Ottawa
Hessah Alsubaie	University of Ottawa
Claire Anantharaman	Université d'Orléans
Marc Bagnol	University of Ottawa
Mohammad Bardestani	University of Ottawa
Dana Bartosova	University of Sao Paulo
Tristan Bice	Federal University of Bahia
Giuliano Boava	Universidade Federal de Santa Catarina (UFSC)
Dina Buric	University of Victoria
Alcides Buss	Federal University of Santa Catarina
Kris Chambers	University of Ottawa
Luiz Cordeiro	University of Ottawa
Joachim Cuntz	University of Muenster
George Elliott	University of Toronto
Ruy Exel	Federal University of Santa Catarina
Ilijas Farah	York University
Gustavo Felisberto Valente	University of Ottawa
Jérôme Fortier	University of Ottawa
Jonathon R Funk	Queensborough Community College, City University of New York
Daniel Gonçalves	UFSC
Pieter Hofstra	University of Ottawa
Vadim Kaimanovich	University of Ottawa
Alexander A. Katz	St. John's University
Matthew Kennedy	University of Waterloo
Arkady Kitover	Rider University
Mark Lawson	Heriot-Watt University
Brice Rodrigue Mbombo	University of Sao Paulo
Kostya Medynets	United States Naval Academy
Matthias Neufang	Carleton University
Ping Wong Ng	University of Louisiana at Lafayette
Jason Parker	University of Ottawa
Micheal Pawliuk	University of Toronto
Vladimir Pestov	University of Ottawa
Timothy Rainone	University of Waterloo
Jean Renault	Université d'Orléans
Pedro Resende	Instituto Superior Tecnico, Univ. Lisboa
Sutanu Roy	Carleton University
Marcelo Sobottka	Federal University of Santa Catarina
Charles Starling	University of Ottawa
Mike Whittaker	University of Glasgow

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