November 6, 2018
1:50PM - 2:50PM
Math Tower 154
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2018-11-06 14:50:00
2018-11-06 15:50:00
Geometric Group Theory Seminar - Thang Nguyen
Title: Quasi-isometric rigidity of warped cones and expanders
Speaker: Thang Nguyen (New York University)
Abstract: Warped cone was defined by Roe, and can be used to get an geometric object that carries the information of the action of a group. In the case of actions with spectral gap, we obtain a family of expanders from this construction. We are looking for situations where coarse geometry of warped cone and expanders determines the action. In the talk, I will explain the construction warped cones, expanders together with ideas why we get rigidity results when the spaces that groups acting on are nice enough. Joint work with David Fisher and Wouter van Limbeek.
Seminar URL: https://research.math.osu.edu/ggt/
Math Tower 154
OSU ASC Drupal 8
ascwebservices@osu.edu
America/New_York
public
Date Range
Add to Calendar
2018-11-06 13:50:00
2018-11-06 14:50:00
Geometric Group Theory Seminar - Thang Nguyen
Title: Quasi-isometric rigidity of warped cones and expanders
Speaker: Thang Nguyen (New York University)
Abstract: Warped cone was defined by Roe, and can be used to get an geometric object that carries the information of the action of a group. In the case of actions with spectral gap, we obtain a family of expanders from this construction. We are looking for situations where coarse geometry of warped cone and expanders determines the action. In the talk, I will explain the construction warped cones, expanders together with ideas why we get rigidity results when the spaces that groups acting on are nice enough. Joint work with David Fisher and Wouter van Limbeek.
Seminar URL: https://research.math.osu.edu/ggt/
Math Tower 154
Department of Mathematics
math@osu.edu
America/New_York
public
Title: Quasi-isometric rigidity of warped cones and expanders
Speaker: Thang Nguyen (New York University)
Abstract: Warped cone was defined by Roe, and can be used to get an geometric object that carries the information of the action of a group. In the case of actions with spectral gap, we obtain a family of expanders from this construction. We are looking for situations where coarse geometry of warped cone and expanders determines the action. In the talk, I will explain the construction warped cones, expanders together with ideas why we get rigidity results when the spaces that groups acting on are nice enough. Joint work with David Fisher and Wouter van Limbeek.
Seminar URL: https://research.math.osu.edu/ggt/