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The space of traces of certain discrete groups

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  • UserRaz Slutsky, Weizmann Institute of Science
  • ClockWednesday 11 October 2023, 13:45-14:45
  • HouseMR4.

If you have a question about this talk, please contact Macarena Arenas .

Note special date and venue

A trace on a group is a positive-definite conjugation-invariant function on it. These functions play an important role in harmonic analysis of discrete groups, and their study has found many exciting connections to rigidity, stability, and dynamics in the past couple of decades. In this talk, I will explain these connections and focus on the topological structure of the space of traces of some groups. We will then see the different behaviours of these spaces for free groups vs. higher-rank lattices. Finally, some open questions about free products and surface groups will be presented. This is based on joint works with Arie Levit, Joav Orovitz and Itamar Vigdorovich.

This talk is part of the Geometric Group Theory (GGT) Seminar series.

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St John's Church Hall, Hills Road, opposite Homerton The Divinity School, St John’s College, All Saints Passage, CB2 1TP LR4, Department of Engineering

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