Great Plains Operator Theory Symposium May 15-19, 2023

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Link to GPOTS 2024 at UNL

Program Description
The 2023 Great Plains Operator Theory Symposium (GPOTS) will be held at The Ohio State University May 15-19, 2023. GPOTS focuses on recent advances in operator algebras (C* algebras, von Neumann algebras, and non-commutative geometry) and operator theory, with applications to a wide array of disciplines, including ergodic theory, representation theory, logic, and mathematical physics.
Conference poster
Talk abstracts (coming soon!)

Tentative Schedule for Talks
All plenary talks will be held in EA 160. Contributed talks will be held in CH 218, 228, 232, and 312. (We will use CH312 on Monday only in place of CH218.)

Monday 5/15
8:15 - 9:00 Breakfast, check in, and welcome in EA lobby
9:00-9:45 - Brett Wick, Washington University, St. Louis - Two Weight Inequalities for Calderón-Zygmund Operators
9:45-10:00 - Coffee Break
10:00-10:45 - Aaron Tikuisis, University of Ottawa - Classification of C*-algebras
10:45-11:15 - Coffee Break
11:15-12:00 - Judith Packer, University of Colorado - Constructing spectral triples for noncommutative solenoids and bounded Bunce-Deddens algebras using length functions and inductive limits

Tuesday 5/16
8:15 - 9:00 Breakfast, check in, and welcome in EA lobby
9:00-9:45 - Alexandru Chirvasitu, University at Buffalo - On the generic paucity of symmetries
9:45-10:00 - Coffee Break
10:00-10:45 - Estelle Basor, American Institute of Mathematics - Some applications of Fredholm theory
10:45-11:15 - Coffee Break
11:15-12:00 - Srivatsav Kunnawalkam Elayavalli, UCLA IPAM - On the story of matrices of high finite order: Then (1942) and now (2022).

Wednesday 5/17
8:15 - 9:00 Breakfast, check in, and welcome in EA lobby
9:00-9:45 - Doron Lubinsky, Georgia Tech - Distribution of Eigenvalues of Toeplitz Matrices with Smooth Entries
9:45-10:00 - Coffee Break
10:00-10:45 - Camila Sehnem, University of Waterloo - C*-envelopes of tensor algebras of product systems
10:45-11:15 - Coffee Break
11:15-12:00 - Guoliang Yu, Texas A&M - Index theory of the Dirac operator on manifolds with polyhedral boundary and its applications

Thursday 5/18
8:15 - 9:00 Breakfast, check in, and welcome in EA lobby
9:00-9:45 - Sarah Reznikoff, Kansas State University - TBD
9:45-10:00 - Coffee Break
10:00-10:45 - Marcelo Laca, University of Victoria - The right Toeplitz algebra of the ax+b semigroup of the natural numbers
10:45-11:15 - Coffee Break
11:15-12:00 - Isaac Goldbring, UC Irvine - A nonstandard proof of the spectral theorem for unbounded self-adjoint operators

Friday 5/19
8:15 - 9:00 Breakfast, check in, and welcome in EA lobby
9:00-9:45 - Emily Peters, Loyola University Chicago - Categorifying connections
9:45-10:00 - Coffee Break
10:00-10:45 - Fritz Gesztesy, Baylor University - Some recent developments in Hardy-type inequalities
10:45-11:15 - Coffee Break
11:15-12:00 - Ben Hayes, University of Virginia - Applications of free entropy to the study of tracial von Neumann algebras

All participants, including invited speakers, are asked to register online. Registration will be open through April 1, 2023. Please fill out the following registration form.

Participants have many options for accommodation for the program. The most affordable option is in a single or shared dorm room. If you would like to be considered for this option, please fill out the following accommodation request form. Otherwise, there are many hotels near campus at which you can make a reservation, including: When making a hotel reservation, say it is for a conference at OSU to get a special rate. If you are unable to get the special rate, let one of the organizers know. There are also more hotel options near by if one of these does not work.

Financial support and reimbursement
There is some funding available for travel reimbursement. Please request this in the registration form above, or contact David Penneys.

Here are the forms that need to be filled out for travel reimbursement: Supplier Form, W8-BEN form, Compliance form.

Forms must be signed and can be returned to Kerry Moore (, preferably before the start of the conference. Air travel must be booked on a US flag carrier.
  • Everyone should fill out and sign the Supplier Form. The address must be where you can receive a paper check.
  • US Non-residents must fill out the W8-BEN form. We will also need a copy of your passport and visa.
  • If you have a WT visa, you must fill out the Compliance form.
  • If you are a US non-resident and cannot receive your reimbursement as a paper check in US Dollars, we need a letter/form on your bank letterhead giving us wire information for your account.

Travel information
If arriving by car, you can park in either:
  • Tuttle Garage: 2000 Tuttle Park Pl, Columbus, OH 43210. It is one block from Cockins Hall, where the conference will take place.
  • Lane Garage: 2100 Neil Ave, Columbus, OH 43210. It is a bit further; use if Tuttle is closed for some reason.
Take a ticket when you enter the garage. If you are a speaker or have contacted David Penneys about travel funding, he will have a parking pass for you, which is a sticker you can place on the ticket which will pay for your parking.

For more information, please contact:
Ovidiu Costin, Rodica Costin, Jan Lang, David Penneys [penneys (dot) 2 (at) osu (dot) edu], or Daniel Wallick []

The organizers gratefully acknowledge support from:
The Mathematics Research Institute at OSU

last modified: 2023/6/27