Dynamical Systems Seminar

Title: Furstenberg systems
Speaker: Scott Schmieding
Speaker Info: Penn State University
Brief Description:
Special Note: Pre-seminar: 3- 3:30, Research seminar: 4-5

A classical result of Furstenberg from 1967 states that the only proper closed subsets of the circle which are invariant under multiplication by both two and three are finite. Since then, several generalizations of this result have been proven. Along these lines, I will discuss the notion of a Furstenberg action of a group, which are systems possessing some of the key features of x2/x3 on the circle, and describe some new examples of such actions which highlight some interesting problems. This is joint work with Van Cyr and Bryna Kra.
Date: Tuesday, February 14, 2023
Time: 3:00pm
Where: Lunt 104
Contact Person: Prof. Bryna Kra
Contact email: kra@math.northwestern.edu
Contact Phone: 847-491-5567
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