"Geometry and Analysis on Groups" Research Seminar

Time: 2016.12.13, 15:00–17:00
Location: Seminarraum 9, Oskar-Morgenstern-Platz 1, 2.Stock
Title: "Detecting sphere boundaries of hyperbolic groups."
Speaker: Nir Lazarovich (ETH Zürich)
Abstract: We show that the boundary of a one-ended simply connected at infinity hyperbolic group with enough codimension–1 surface subgroups is homeomorphic to a sphere. By works of Markovic and Kahn-Markovic our result gives a new characterization of groups which are virtually fundamental groups of hyperbolic 3–manifolds. Joint work with B. Beeker.