Group operator algebras and Non commutative geometry / Algèbres d'opérateurs de groupes et Geometrie non commutative

Collection Group operator algebras and Non commutative geometry / Algèbres d'opérateurs de groupes et Geometrie non commutative

Organizer(s) Androulidakis, Iakovos ; Debord, Claire ; Germain, Emmanuel ; Houdayer, Cyril

Date(s) 22/04/2024 - 26/04/2024

linked URL https://conferences.cirm-math.fr/2987.html

00:00:00 / 00:00:00

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Amenability and hyperfiniteness for group actions on trees

By Pieter Spaas

We identify natural conditions on group actions on trees which imply that the induced action on the boundary is (Borel/measure) hyperfinite. We will consider the differences between the Borel and measurable versions, and discuss different notions of amenability which arise in the proofs.

Information about the video

Date of recording 25/04/2024
Date of publication 13/05/2024
Institution CIRM
Licence CC BY NC ND
Language English
Audience Researchers, Graduate Students
Director(s) Guillaume Hennenfent
Format MP4

Citation data

DOI 10.24350/CIRM.V.20166103
Cite this video Spaas, Pieter (25/04/2024). Amenability and hyperfiniteness for group actions on trees. CIRM. Audiovisual resource. DOI: 10.24350/CIRM.V.20166103
URL https://dx.doi.org/10.24350/CIRM.V.20166103

Domain(s)

Bibliography

ELAYAVALLI, Srivatsav Kunnawalkam, OYAKAWA, Koichi, SHINKO, Forte, et al. Hyperfiniteness for group actions on trees. arXiv preprint arXiv:2307.10964, 2023. - https://doi.org/10.48550/arXiv.2307.10964

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