Dynamical Systems Seminar

Title: Properties of the strong unstable foliation
Speaker: Davi Obata
Speaker Info: Brigham Young University
Brief Description:
Special Note:

The understanding of invariant foliations is very important in the theory of uniformly and partially hyperbolic dynamics. The main theme of this talk is to study transitive Anosov (or uniformly hyperbolic) systems having a decomposition of the form Es +Ec +Eu, where Ec expands uniformly. There are two foliations that we will consider, the (center) unstable foliation Wcs and the strong unstable foliation W u, tangent to Ec + Eu and Eu, respectively. The foliation W cu is very well understood. It is known that the foliation is minimal, i.e. every leaf is dense, and that there is only one ergodic invariant measure "compatible" with that foliation, the so-called SRB measure. However, the strong unstable foliation is not well understood. In this talk, I will survey some recent progress in the direction of understanding topological and ergodic properties of the strong unstable foliation and how this is related to measure rigidity for u-Gibbs measures.
Date: Tuesday, October 03, 2023
Time: 4:00pm
Where: Lunt 104
Contact Person: Prof. Bryna Kra
Contact email: kra@math.northwestern.edu
Contact Phone: 847-491-5567
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