Distal strongly ergodic actions
Dynamical Systems
2020-09-25 v3
Abstract
Let be an arbitrary countable ordinal. Using results of Bourgain and Gamburd on compact systems with spectral gap we show the existence of an action of the free group on three generators on a compact metric space , admitting an invariant probability measure , such that the resulting dynamical system is strongly ergodic and distal of rank . In particular this shows that there is a system which is strongly ergodic but not compact. This result answers the open question whether such actions exist.
Keywords
Cite
@article{arxiv.1803.01844,
title = {Distal strongly ergodic actions},
author = {Eli Glasner and Benjamin Weiss},
journal= {arXiv preprint arXiv:1803.01844},
year = {2020}
}
Comments
A section is added where we show the existence of distal strongly ergodic $F_3$-systems of arbitrary countable rank. A few corrections of some mathematical errors and some misprints