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Presentation
Lecture plan
The Neretin group, and why it has no lattices;
Groups acting on trees which have no lattices;
“Parabolic” subgroups and their IRSs: a continuous version of a result of Thomas–Tucker-Drob;
…
References
Łukasz Garncarek, Nir Lazarovich,
The Neretin groups,
Arxiv version.
Uri Bader, Pierre-Emmanuel Caprace, Tsachik Gelander, Shahar Mozes,
Simple groups without lattices, Bull. LMS 2012,
Arxiv version.
Adrien le Boudec,
Groups acting on trees with almost prescribed local action, Comm. Math. Helv. 2016,
Arxiv version
Simon Thomas, Robin Tucker-Drob,
Invariant random subgroups of strictly diagonal limits of finite symmetric groups, Bull. LMS 2014,
Arxiv version.