30 November 2020 to 4 December 2020
Online
Europe/Moscow timezone

Non-existence of a universal zero entropy system for non-periodic amenable group actions

3 Dec 2020, 17:30
25m
Online

Online

Speaker

Prof. Georgii Veprev (Euler Mathematical Institute)

Description

Let $G$ be a non-periodic amenable group. We prove that there does not exist a topological action of $G$ for which the set of ergodic invariant measures coincides with the set of all ergodic measure-theoretic systems of entropy zero. Previously J. Serafin, answering a question by B. Weiss, proved the same for $G=\mathbb{Z}$.

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