- Audiences
- Types
Operator Theory Seminar (309 VAN) - Assistant Professor Paul Herstedt; Department of Mathematics, Grinnell College
Mar 7, 2023
01:30 PM - 02:30 PM
30 North Dubuque Street, Iowa City, IA 52242
Constructing AT-algebras from zero-dimensional systems
Assistant Professor Paul Herstedt; Department of Mathematics, Grinnell College
We explain directly how one constructs approximating circle algebras in crossed products from certain zero-dimensional dynamical systems. We explain how one overcomes the problems that one encounters when expanding from the case where the system has no periodic points (e.g. infinite minimal systems) to give a direct proof of the canonical essentially minimal example, the one-point compactification of the integers. Expanding beyond that is a notational nightmare, but it is not hard to intuitively explain.
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 in advance at