EVENT DETAILS AND ABSTRACT

Title: Time changes of Anosov actions and the Katok-Spatzier conjecture
Speaker: Kurt Vinhage
Speaker Info: University of Utah
Brief Description:
Special Note:
Abstract:

We describe a construction of abelian group actions which contradict the classical Katok-Spatzier conjecture: all abelian actions without rank one factors are algebraic. These examples are obtained from perturbations of product actions via time changes. We will highlight features of these examples and why they do not contradict known rigidity theorems. We will describe a reformulation of the conjecture, some related problems, and ongoing work with A. Uzman.