2023-2024 Operator Algebra Seminar

July 1, 2023 to June 30, 2024, The Fields Institute

Location: Fields Institute, Room 210

Description

The Operator Algebra Seminar generally meets in person every Tuesday and Thursday from 2 PM to 5 PM (ET) at the Fields Institute.

Room 210: July to December 2023 (unless specified otherwise) - as part of the Thematic Program on Operator Algebras and Applications
Room 332: January to June 2024

The seminar consists of both formal talks — with details announced below — and working meetings with the participants cooperating informally. For more information about this seminar series, please contact Prof. George Elliott.

Video Feed Links:

Operator Algebra Seminar YouTube Playlist

Abstract Submission Link:

Confirmed Speaker Abstract Submission

Schedule

Past Talks

Thursday, December 14th, 2023
14:00 to 14:50	Nonisomorphic simple AH-algebras with the same Elliott invariant and radius of comparison N. Christopher Phillips, University of Oregon
15:10 to 16:00	Nuclear dimension of twisted groupoid C*-algebras Maria Grazia Viola, Lakehead University

Thursday, November 30th, 2023
14:00 to 14:50	Cuntz-Pimsner algebras of twisted partial $\mathbb{Z}$-actions Aaron Kettner, Institute of Mathematics of the Czech Academy of Sciences

Tuesday, November 28th, 2023
14:00 to 14:50	Graph products and strong 1-boundedness Ian Charlesworth, Cardiff University

Tuesday, November 21st, 2023
14:00 to 14:50	Cohomological obstructions to group stability Marius Dadarlat, Purdue University

Thursday, November 2nd, 2023
14:00 to 14:50	Description of intermediate C*-algebras for noncommutative Crossed products Apurva Seth, Ben-Gurion University of the Negev

Tuesday, October 31st, 2023
14:00 to 14:50	On the Existence, or lack, of non-commutative factors of a dynamical system Tattwamasi Amrutam, Ben Gurion University of the Negev

Thursday, October 26th, 2023
14:00 to 14:50	Finite dimensional approximations of groups Christopher Schafhauser, University of Nebraska-Lincoln

Tuesday, October 24th, 2023
14:00 to 14:50	Fraïssé Theory for Cuntz semigroup Laurent Cantier, Czech Academy of Sciences

Thursday, October 19th, 2023
14:00 to 16:00	Large finite values of Rokhlin dimension with commuting towers N. Christopher Phillips, University of Oregon

Tuesday, October 17th, 2023
14:00 to 14:50	Traces on ultrapowers of C*-algebras Francesc Perera, Universitat Autònoma de Barcelona

Thursday, October 12th, 2023
14:00 to 14:50	Correspondences, K-theory and homology for étale groupoids Alistair Miller, University of Southern Denmark
15:10 to 16:00	Detecting ideals in reduced crossed product $C^*$-algebras of topological dynamical systems Are Austad, University of Southern Denmark

Tuesday, October 10th, 2023
14:00 to 14:50	The zero-product structure of C*-algebras Hannes Thiel, Chalmers University of Technology and University of Gothenburg
15:10 to 16:00	On the symmetry of $L^1(G)$ for certain group extensions Felipe Flores, University of Virginia

Thursday, September 28th, 2023
14:00 to 14:50	Infinitesimal Operators, Part II James Mingo, Queen's University
15:10 to 16:00	Tensor category equivariant $\mathcal{Z}$-stability Sergio Giron Pacheco, University of Oxford

Tuesday, September 26th, 2023
14:00 to 16:00	Operator algebras from left cancellative small categories Chris Bruce, University of Glasgow

Thursday, September 14th, 2023
14:00 to 14:50	Infinitesimal Operators James Mingo, Queen's University

Tuesday, September 12th, 2023
14:00 to 16:00	Long thin covers and nuclear dimension Ilan Hirshberg, Ben-Gurion University of the Negev

Thursday, September 7th, 2023
14:00 to 14:50	Exotic circle actions on classifiable C*-algebras Ilan Hirshberg, Ben-Gurion University of the Negev

Tuesday, September 5th, 2023
14:00 to 14:50	Uniformly Super McDuff II$_1$ Factors Jennifer Pi, University of California, Irvine

Thursday, August 24th, 2023
14:00 to 16:00	Structure of transformation group C*-algebras Zhuang Niu, University of Wyoming
16:00 to 16:30	Some functional analysis theorems Qingyang Bao, University of Toronto
16:30 to 17:00	Abstract harmonic analysis: an overview William (Zhiqi) Zhang, University of Toronto

Tuesday, August 22nd, 2023
14:00 to 14:30	Unveiling the Pontryagin Duality Theorem: A Proof in 4 Steps Freeman Cheng, University of Toronto
14:30 to 15:00	Discussing the Haar measure Chi Kam Wong, University of Toronto
15:00 to 15:30	Reading Course Summary Karl Lin, University of Toronto

Thursday, August 17th, 2023
14:00 to 14:50	Classification of Cuntz-Pimsner algebras associated to vector bundles, Part I Maria Grazia Viola, Lakehead University Location:Fields Institute, Room 332
15:10 to 16:00	Classification of Cuntz-Pimsner algebras associated to vector bundles, Part II Maria Grazia Viola, Lakehead University Location:Fields Institute, Room 332

Tuesday, August 15th, 2023
14:00 to 14:50	An introduction to the Bost-Connes system, Part I Joshua Lau, University of Toronto Location:Fields Institute, Room 332
15:10 to 16:00	An introduction to the Bost-Connes system, Part II Joshua Lau, University of Toronto Location:Fields Institute, Room 332

Thursday, August 10th, 2023
14:00 to 14:50	Tracial nuclear dimension and tracial approximate divisibility, Part I Xuanlong Fu, The Fields Institute
15:10 to 16:00	Tracial nuclear dimension and tracial approximate divisibility, Part II Xuanlong Fu, The Fields Institute

Tuesday, August 8th, 2023
14:00 to 14:50	Geometric properties on topological groupoids and applications to the structures of $C^*$-algebras and groups III Xin Ma, The Fields Institute
15:10 to 16:00	Geometric properties on topological groupoids and applications to the structures of $C^*$-algebras and groups IV Xin Ma, The Fields Institute

Thursday, August 3rd, 2023
14:00 to 14:50	Geometric properties on topological groupoids and applications to the structures of C∗ -algebras and groups I Xin Ma, The Fields Institute
15:10 to 16:00	Geometric properties on topological groupoids and applications to the structures of $C^*$-algebras and groups II Xin Ma, The Fields Institute

Tuesday, August 1st, 2023
14:00 to 14:50	The Global Glimm Problem Eduard Vilalta, The Fields Institute
15:10 to 16:00	Covering dimension for Cuntz semigroups Eduard Vilalta, The Fields Institute

Thursday, July 27th, 2023
14:00 to 14:50	Jung-Hayes free entropy and its applications to von Neumann algebras, Part I David Jekel, The Fields Institute Location:Fields Institute, Room 309, Stewart Library
15:10 to 16:00	Jung-Hayes free entropy and its applications to von Neumann algebras, Part II David Jekel, The Fields Institute Location:Fields Institute, Room 309, Stewart Library

Tuesday, July 25th, 2023
14:00 to 14:50	Optimal Transport Theory in Free Probability, Part I David Jekel, The Fields Institute Location:Fields Institute, Room 309, Stewart Library
15:10 to 16:00	Optimal Transport Theory in Free Probability, Part II David Jekel, The Fields Institute Location:Fields Institute, Room 309, Stewart Library

Thursday, July 13th, 2023
14:00 to 14:50	An introduction to the Cuntz semigroup Eduard Vilalta, The Fields Institute
15:10 to 16:00	Soft C*-algebras Eduard Vilalta, The Fields Institute

Tuesday, July 11th, 2023
14:00 to 14:50	Around Z-stability: a classification of Villadsen algebras, and a study of the comparison and zero mean dimension, Part I Zhuang Niu, University of Wyoming
15:10 to 16:00	Around Z-stability: a classification of Villadsen algebras, and a study of the comparison and zero mean dimension, Part II Zhuang Niu, University of Wyoming

Thursday, July 6th, 2023
14:00 to 14:50	A generalized BDF-Kasparov theorem and Voiculescu theorem, Part I Huaxin Lin, University of Oregon
15:10 to 16:00	A generalized BDF-Kasparov theorem and Voiculescu theorem, Part II Huaxin Lin, University of Oregon

Tuesday, July 4th, 2023
14:00 to 14:50	The Dynamical Kirchberg-Phillips Theorem Jamie Gabe, University of Southern Denmark
15:10 to 16:00	Nuclear C-algebras as inductive limits of finite dimensional C-algebras Kristin Courtney, WWU Münster