August 25, 2020
11:00AM - 12:00PM
Online
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2020-08-25 11:00:00
2020-08-25 12:00:00
Geometric Group Theory - Seminar
Title: Quasi-isometric rigidity of generic cyclic HNN extensions of free groups
Speaker: Sam Shepherd - University of Oxford
Abstract: Studying quasi-isometries between groups is a major theme in geometric group theory. Of particular interest are the situations where the existence of a quasi-isometry between two groups implies that the groups are equivalent in a stronger algebraic sense, such as being commensurable. I will survey some results of this type, and then talk about recent work with Daniel Woodhouse where we prove quasi-isometric rigidity for certain graphs of virtually free groups, which include "generic" cyclic HNN extensions of free groups.
Seminar Link
Online
OSU ASC Drupal 8
ascwebservices@osu.edu
America/New_York
public
Date Range
Add to Calendar
2020-08-25 11:00:00
2020-08-25 12:00:00
Geometric Group Theory - Seminar
Title: Quasi-isometric rigidity of generic cyclic HNN extensions of free groups
Speaker: Sam Shepherd - University of Oxford
Abstract: Studying quasi-isometries between groups is a major theme in geometric group theory. Of particular interest are the situations where the existence of a quasi-isometry between two groups implies that the groups are equivalent in a stronger algebraic sense, such as being commensurable. I will survey some results of this type, and then talk about recent work with Daniel Woodhouse where we prove quasi-isometric rigidity for certain graphs of virtually free groups, which include "generic" cyclic HNN extensions of free groups.
Seminar Link
Online
Department of Mathematics
math@osu.edu
America/New_York
public
Title: Quasi-isometric rigidity of generic cyclic HNN extensions of free groups
Speaker: Sam Shepherd - University of Oxford
Abstract: Studying quasi-isometries between groups is a major theme in geometric group theory. Of particular interest are the situations where the existence of a quasi-isometry between two groups implies that the groups are equivalent in a stronger algebraic sense, such as being commensurable. I will survey some results of this type, and then talk about recent work with Daniel Woodhouse where we prove quasi-isometric rigidity for certain graphs of virtually free groups, which include "generic" cyclic HNN extensions of free groups.
