Canadian Operator Symposium 2023 (COsy 2023)

May 22 - 26, 2023, Western University

Location: Western University

Description

The Canadian Operator Symposium( COSy) was established in 1972 by Israel Halperin as a conference focused on operator algebras and applications. COSy quickly grew into, and remains today, the main annual meeting for Operator Theory in Canada with a global reach. Operator Theory is a well-established and highly-active field of research which has long been a pillar of Canadian mathematics. A huge variety of mathematical disciplines overlap or make critical use of Operator Theory - Harmonic Analysis, Mathematical Physics, Dynamical Systems, Number Theory and Geometry, to name just a few. As a meeting point of so many subjects, Operator Theory is by nature an interdisciplinary pursuit. Accordingly, Canada's long-recognized status as a stronghold for Operator Theory has had an outsized effect on the general health of Canadian mathematics and greatly bolstered its international reputation.

Schedule

Please find the schedule here.

Talks will take place in Physics and Astronomy Building (Accessibility floor plan). The plenary talks and session A parallel talks (shaded in the above table) will take place at PAB 148. While session B parallel talks will take place in PAB 106.

Registration Instruction:

Please register here.

• If you are a PhD student and you are applying for funding, please ask your supervisor to send a reference email to one of the organizers.

• A limited number of funding opportunities are available, with priority given to women and junior researchers.

• NSF grants will provide funding for US participants and Fields Institute grants will be used for non-US participants. Travel and accommodation are the only expenses eligible for funding.

• We will consider all requests for travel support that are received by April 15, 2023. Later requests for funding may also be considered, as funds permit.

Local Accommodation:

On-campus accommodation (Ontario Hall)

Address: 230 Sarnia Road, London, ON, N6G 0N2 (1.5 km from the math department)
Rate: Private Shared Accommodation - $85.00/night+tax (with parking, Wifi, & Hot breakfast all included.)
Website: https://conference.has.uwo.ca/Register/default.aspx?code=C001546 (Online Accommodation Link Closes)

Spencer Leadership Centre

Address: 551 Windermere Road, London, ON N5X 2T1 (2.6 km from math department)
Rate: $149 per room/per night + tax
Phone reservations: call 519 679 4546/519 675 5487.
Website: www.iveyspencerleadershipcentre.com

The Guest House on the Mount

Address: 1480 Richmond Street - Ignatia Hall, London, Ontario N6G 0J4 (2 km from math department)
Rates: $89 per room/per night + tax (Full Bathroom Suits)
Reservations: 519 641 8100/1 855 806 0186
Website: https://guesthouseonthemount.ca/

Summer Accommodation-Brescia University College

Address: 1285 Western Road, London, Ontario, Canada N6G 1H2 (1 km from math department)
Rates: from $120 per night (one Queen bed/private Washroom)
For Reservation: 519.432.8353
Website: https://brescia.uwo.ca/conferences/summer_accommodations.php

The Park Hotel London

Address: 242 Pall Mall Street, London, ON N6A 5P6 (4.9 km from math department)
Rates: from $170 (Lifestyle Accessible Queen Suite Non-Smk)
For reservations: 519642444/18005614574
Website: www.parkhotelsuites.com

How to get to London from Pearson airport:

Here are some following options to travel from Pearson airport in Toronto (the only international airport in Toronto) to London Ontario:

"Robert Q" shuttle buses: (price: $83.93)

This is the most convenient and frequent option. The regular trip to London is about 2 hours and their 24/7 station is located at the lower floors of Pearson airport.
Note that you can arrange your drop off location to be your Hotel in London while booking your shuttle; They may charge you extra for this option.

OnexBus: (starts at $37)

This is the less expensive option, though their buses may have less frequent schedules and may take longer to take you to London (must be carefully chosen while booking the ticket). Your arrival point on London is best to be chosen at "VIA Rail" train station. Then you take a taxi to your Hotel.

Connection flight:

While booking your flight, you can book a flight with the destination as London International Airport YXU. You will then have a domestic connection flight from Pearson Airport to London Airport. However, for such as short flight (about 45 minutes) to London, you may need to stay at the airport sometimes more than 4 hours.

Schedule

Monday, May 22nd, 2023
08:45 to 09:15	Welcome
09:15 to 10:00	Classification of some non-classifiable simple C-algebras George Elliott, University of Toronto Location:*
10:00 to 10:20	Coffee Break
10:20 to 11:05	Cohomology for free minimal $\mathbb{Z}^2$-actions on the Cantor set Thierry Giordano, University of Ottawa Location:
11:05 to 11:15	Break
11:15 to 12:00	Noncommutative Choquet Theory and Majorization Matthew Kennedy, University of Waterloo Location:
12:00 to 13:45	Lunch
13:45 to 14:15	The Flavors of Operator Theory ---In Celebration of the Mathematical Life of Chandler Davis Man-Duen Choi, University of Toronto Location:
14:15 to 14:30	Coffee Break
14:30 to 15:15	The Novikov conjecture, operator K theory, and diffeomorphism groups Sherry Gong, Texas A&M University Location:
15:15 to 15:30	Break
15:30 to 16:15	Infinitesimal Free Independence James Mingo, Queen's University Location:
16:15 to 16:25	Break
16:25 to 16:50	Higman-Thompson groups from self-similar groupoid actions Valentin Deaconu, University of Nevada Location:
16:25 to 16:50	Structure and classification of real $C^$-algebras Andrew Dean, Lakehead University Location:*
16:50 to 16:55	Break
16:55 to 17:20	An Equivariant Index Formula for Source-wise Dirac Operators on Groupoids Ahmad Reza Haj Saeedi Sadegh, Northeastern University Location:
17:20 to 17:25	Break
17:25 to 17:50	Periodic Laurent and Toeplitz Operators Patrick Donaghue, The Pennsylvania State University Location:
17:25 to 17:50	Tensorially absorbing inclusions Pawel Sarkowicz, University of Ottawa Location:

Tuesday, May 23rd, 2023
09:00 to 09:45	C-algebras generated by isometries and their boundary quotients Marcelo Laca, University of Victoria Location:*
09:45 to 10:05	Coffee Break
10:05 to 10:50	A new index theorem for manifolds with singularities and its geometric applications Zhizhang Xie, Texas A&M University Location:
10:50 to 11:00	Break
11:00 to 11:45	Self-similar semigroups and their C-algebras Dilian Yang, University of Windsor Location:*
11:45 to 13:45	Lunch
13:45 to 14:30	New notes on regular ideals of C-algebras Sarah Reznikoff, Kansas State University Location:*
14:30 to 14:50	Coffee Break
14:50 to 15:35	Homotopical Foundations of C-Algebraic Quantum Spin Systems Markus Pflaum, University of Colorado Location:*
15:35 to 15:45	Break
15:45 to 16:10	Majorization in C-Algebras Paul Skoufranis, York University Location:*
15:45 to 16:10	Almost Elementary C-Dynamics and $\mathcal{Z}$-stability of crossed products Joachim Zacharias, University of Glasgow Location:*
16:10 to 16:15	Break
16:15 to 16:40	The lattice of C-covers of an operator algebra. Adam Humeniuk, MacEwan University Location:*
16:15 to 16:40	The heat semigroup, diffusion, and the spectral action in almost commutative noncommutative geometry. Sitanshu Gakkhar, California Institute of Technology Location:
16:40 to 16:45	Break
16:45 to 17:10	No Title Specified Tattwamasi Amrutam, Ben Gurion University of the Negev Location:
16:45 to 17:10	Commutators in finite free probability Jacob Campbell, University of Waterloo Location:
17:10 to 17:15	Break
17:15 to 17:40	On sequences of spectral triples associated to triangulations and their convergence. Damien Tageddine, McGill University Location:
17:15 to 17:40	No Title Specified Tyler Schulz, University of Victoria Location:

Wednesday, May 24th, 2023
09:00 to 09:45	Inductive sequences of spectral triples for twisted group $C^$-algebras and convergence in the spectral propinquity Judith Packer, University of Colorado Boulder Location:*
09:45 to 10:05	Coffee Break
10:05 to 10:50	Quantitative K-theory for operator algebras and applications Guoliang Yu, Texas A&M University Location:
10:50 to 11:00	Break
11:00 to 11:45	Introduction to quantum games and their values I Jason Crann, Carleton University Location:
11:45 to 13:45	Lunch
13:45 to 14:30	Quantum principal $\mathrm{U}(1)$-bundles: differential, Riemannian, and metric geometry Branimir Ćaćić, University of New Brunswick, Fredericton Location:
14:30 to 14:50	Coffee Break
14:50 to 15:35	Spectral Triples for Noncommutative Solenoids Therese Landry, University of California, Santa Barbara Location:
15:35 to 15:45	Break
15:45 to 16:10	Villadsen idempotents Cristian Ivanescu, MacEwan University Location:
15:45 to 16:10	Relative Hopf-cyclic coefficients Ilya Shapiro, University of Windsor Location:
16:10 to 16:15	Break
16:15 to 16:40	An introduction to random noncommutative geometries Nathan Pagliaroli, Western University Location:
16:15 to 16:40	Zero-range process and integrability Anamaria Savu, University of Alberta Location:
16:40 to 16:45	Break
16:45 to 17:10	Fermionic fuzzy geometries Luuk Verhoeven, Western University Location:
16:45 to 17:10	Simplicity of crossed products by FC-hypercentral groups Dan Ursu, University of Münster Location:
17:10 to 17:15	Break
17:15 to 17:40	Higher order moments and free cumulants of complex Wigner matrices. Daniel Munoz, Queen's University Location:
17:15 to 17:40	Extended diffeomorphism groups for noncommutative manifolds Venkata Karthik Timmavajjula, University of New Brunswick Location:

Thursday, May 25th, 2023
09:00 to 09:45	Covariant and contravariant functoriality for operator algebras that one can see Piotr M. Hajac, IMPAN Location:
09:45 to 10:05	Coffee Break
10:05 to 10:50	Nuclear dimension of twisted groupoid C-algebras Maria Grazia Viola, Lakehead University Location:*
10:50 to 11:00	Break
11:00 to 11:45	Introduction to quantum games and their values II Jason Crann, Carleton University Location:
11:45 to 13:45	Lunch
13:45 to 14:30	Semiclassical Analysis and Noncommutative Geometry Raphaël Ponge, Sichuan University Location:
14:30 to 14:50	Coffee Break
14:50 to 15:35	Equilibrium on Toeplitz extensions of higher dimensional noncommutative tori Camila Sehnem, University of Waterloo Location:
15:35 to 15:45	Break
15:45 to 16:10	Discrete inclusions of C-algebras Roberto Hernandez Palomares, University of Waterloo Location:*
15:45 to 16:10	The Cuntz semigroups of crossed products M. Ali Asadi-Vasfi, University of Toronto Location:
16:10 to 16:15	Break
16:15 to 16:40	Majorization and generalized numerical ranges Jireh Loreaux, Southern Illinois University Edwardsville Location:
16:15 to 16:40	H-unitality for smooth groupoid algebras Michael Francis, Western University Location:
16:40 to 16:45	Break
16:45 to 17:10	Orthogonal and Ergodic Decomposition of a Unital Completely Positive Map Chaitanya Kulkarni, Indian Institute of Science Education and Research Location:
16:45 to 17:10	Approximate Representations of Quantum Groups Jennifer Zhu, University of Waterloo Location:
17:10 to 17:15	Break
17:15 to 17:40	Non-commutative boundaries and peaking phenomena for operator algebras Ian Thompson, University of Manitoba Location:
17:15 to 17:40	Quantum superchannels on the space of quantum channels Padraig Daly, University of Waterloo Location:

Friday, May 26th, 2023
09:00 to 09:45	A central limit theorem for star-generators of the infinite symmetric group, which relates to traceless CCR-GUE matrices Alexandru Nica, University of Waterloo Location:
09:45 to 10:05	Coffee Break
10:05 to 10:50	Inverse systems of groupoids, with applications to $\newcommand{\Cst}{\text{C}^}\Cst$-algebras Magdalena Georgescu, none Location:*
10:50 to 11:00	Break
11:00 to 11:45	Expansive systems and their C-algebras Robin Deeley, University of Colorado Boulder Location:*

Invited Speakers

Name	Affiliation
Branimir Ćaćić	University of New Brunswick, Fredericton
Jason Crann	Carleton University
Robin Deeley	University of Colorado Boulder
George Elliott	University of Toronto
Magdalena Georgescu	none
Thierry Giordano	University of Ottawa
Sherry Gong	Texas A&M University
Piotr M. Hajac	IMPAN
Matthew Kennedy	University of Waterloo
Marcelo Laca	University of Victoria
Therese Landry	University of California, Santa Barbara
James Mingo	Queen's University
Alexandru Nica	University of Waterloo
Judith Packer	University of Colorado Boulder
Markus Pflaum	University of Colorado
Raphaël Ponge	Sichuan University
Sarah Reznikoff	Kansas State University
Maria Grazia Viola	Lakehead University
Zhizhang Xie	Texas A&M University
Dilian Yang	University of Windsor
Guoliang Yu	Texas A&M University

Registered Participants

Name	Affiliation
M. Ali Asadi-Vasfi	University of Toronto
Tatyana Barron	Western University
William Bate	Western University
Michael Brannan	University of Waterloo
Thomas Bray	University of Waterloo
Chris Bruce	University of Glasgow
Branimir Ćaćić	University of New Brunswick, Fredericton
Jacob Campbell	University of Waterloo
Oliver Chiriac	University of Oxford
Man-Duen Choi	University of Toronto
Jason Crann	Carleton University
Padraig Daly	University of Waterloo
Kenneth Davidson	University of Ottawa and University of Waterloo
Valentin Deaconu	University of Nevada
Andrew Dean	Lakehead University
Robin Deeley	University of Colorado Boulder
Patrick Donaghue	The Pennsylvania State University
Dorin Dumitrascu	Adrian College
George Elliott	University of Toronto
Michael Francis	Western University
Xuanlong Fu	The Fields Institute
Sitanshu Gakkhar	California Institute of Technology
Dylan Gawlak	Queen's University
Magdalena Georgescu	none
Asghar Ghorbanpour	Western University
Thierry Giordano	University of Ottawa
Joseph Gondek	Carleton University
Sherry Gong	Texas A&M University
Alec Gow	University of Waterloo
Piotr M. Hajac	IMPAN
Ahmad Reza Haj Saeedi Sadegh	Northeastern University
Satwata Hans	The Pennsylvania State University
Roberto Hernandez Palomares	University of Waterloo
Nigel Higson	The Pennsylvania State University
Jeremy Hume	University of Glasgow
Adam Humeniuk	MacEwan University
Cristian Ivanescu	MacEwan University
Byung-Jay Kahng	Canisius College
Matthew Kennedy	University of Waterloo
Masoud Khalkhali	Western University
David Kribs	University of Guelph
Larissa Kroell	University of Waterloo
Chaitanya Kulkarni	Indian Institute of Science Education and Research
Marcelo Laca	University of Victoria
Therese Landry	University of California, Santa Barbara
Brian Lin	Carleton University
Jireh Loreaux	Southern Illinois University Edwardsville
Marius Mantoiu	Universidad de Chile
Liam McQuay	University of Waterloo
James Mingo	Queen's University
Daniel Munoz	Queen's University
Alexandru Nica	University of Waterloo
Dolapo Oyetunbi	University of Ottawa
Judith Packer	University of Colorado Boulder
Nathan Pagliaroli	Western University
Daniel Pepper	York University
Markus Pflaum	University of Colorado
Raphael Ponge	Sichuan University
Raphaël Ponge	Sichuan University
Finlay Rankin	Carleton University
Sarah Reznikoff	Kansas State University
Jared Rosenblitt	N/a
Hridoyananda Saikia	University of Manitoba
Pawel Sarkowicz	University of Ottawa
Anamaria Savu	University of Alberta
Tyler Schulz	University of Victoria
Erik Séguin	University of Waterloo
Camila Sehnem	University of Waterloo
Ilya Shapiro	University of Windsor
Paul Skoufranis	York University
Brendan Steed	University of Victoria
Karen Strung	Institute of Mathematics, Czech Academy of Sciences
Damien Tageddine	McGill University
Xiang Tang	Washington University
Ian Thompson	University of Manitoba
Aaron Tikuisis	University of Ottawa
Venkata Karthik Timmavajjula	University of New Brunswick
Dan Ursu	University of Münster
Robert Valente	University of Windsor
Luuk Verhoeven	Western University
Maria Grazia Viola	Lakehead University
Zhizhang Xie	Texas A&M University
Dilian Yang	University of Windsor
Guoliang Yu	Texas A&M University
Joachim Zacharias	University of Glasgow
Jennifer Zhu	University of Waterloo

Organizing Committee

Michael Francis - Western University

Asghar Ghorbanpour - Western University

Masoud Khalkhali - Western University

Xiang Tang - Washington University

Scientific Committee

Chris Bruce - University of Glasgow

George Elliott - University of Toronto

Nigel Higson - The Pennsylvania State University

James Mingo - Queen's University

Karen Strung - Institute of Mathematics, Czech Academy of Sciences

Aaron Tikuisis - University of Ottawa

The Fields Institute for
Research in Mathematical Sciences