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2024 - T2 - WS3 - Actions of large groups, geometric structures, and the Zimmer program

Collection 2024 - T2 - WS3 - Actions of large groups, geometric structures, and the Zimmer program

Organizer(s) Brown, Aaron ; Fisher, David ; Melnick, Karin ; Pecastaing, Vincent
Date(s) 10/06/2024 - 14/06/2024
linked URL https://indico.math.cnrs.fr/event/9046/
10 16

Rigidity of commensurators and its applications

By Wouter Van Limbeek

I will discuss a question raised independently by Greenberg and Shalom: Can an infinite discrete subgroup of a simple Lie group have dense commensurator and not be a lattice? I will explain the surprising connections between this question and other long-standing open problems, and discuss recent progress on special cases of the question. This is joint work with (subsets of) Brody, Fisher, and Mj.

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Citation data

  • DOI 10.57987/IHP.2024.T2.WS3.010
  • Cite this video Van Limbeek, Wouter (13/06/2024). Rigidity of commensurators and its applications. IHP. Audiovisual resource. DOI: 10.57987/IHP.2024.T2.WS3.010
  • URL https://dx.doi.org/10.57987/IHP.2024.T2.WS3.010

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