Operator Theory Seminar - Andrew Barsky; Department of Mathematics, University of Iowa

Rank One Systems in Borel Dynamics, and Measure Extension of Bratteli Diagrams

Andrew Barsky

The class of rank one automorphisms of a measure space has been extensively studied since the 1970s. They have been recently classified up to isomorphism. We introduce the notion of a rank one automorphism in the context of Borel dynamics. We show that these automorphisms arise naturally in the theory of Bratteli diagrams as extensions from odometers. This talk is based on joint work with Sergii Bezuglyi.

To participate in this event virtually via Zoom, go to https://uiowa.zoom.us/j/95316149275.

Tuesday, April 21, 2026 1:30pm to 2:20pm
Van Allen Hall
309
30 North Dubuque Street, Iowa City, IA 52242
View on Event Calendar
Individuals with disabilities are encouraged to attend all University of Iowa–sponsored events. If you are a person with a disability who requires a reasonable accommodation in order to participate in this program, please contact Department of Physics & Astronomy in advance at 319-335-1686 or physics-astronomy@uiowa.edu.