Ellis Buckminster (Penn)
Event Date
2025-11-05
Event Time
02:30 pm ~ 03:30 pm
Event Location
Wachman 617
Given a foliation on a 3-manifold M, one can often construct a “universal circle” — an action of the fundamental group of M on a circle that is in some way compatible with the structure of the foliation at infinity. In general, it is a difficult problem to classify universal circles for a given foliation. This talk will focus on universal circles for the stable and unstable foliations of Anosov flows. We will describe the structure of these foliations at infinity and show that three natural constructions give rise to nonisomorphic universal circles in this setting. This is joint work with Samuel Taylor.