Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-26T11:32:25.997Z Has data issue: false hasContentIssue false

Complete regularity of Ellis semigroups of $\mathbb{Z} $-actions

Published online by Cambridge University Press:  13 November 2020

MARCY BARGE
Affiliation:
Montana State University, Department of Mathematical Sciences, Bozeman, MT59717, USA (e-mail: barge@math.montana.edu)
JOHANNES KELLENDONK*
Affiliation:
Univerisité de Lyon, Université Claude Bernard Lyon 1, Institute Camille Jordan, CNRS UMR 5208, 69622Villeurbanne, France

Abstract

It is shown that the Ellis semigroup of a $\mathbb Z$ -action on a compact totally disconnected space is completely regular if and only if forward proximality coincides with forward asymptoticity and backward proximality coincides with backward asymptoticity. Furthermore, the Ellis semigroup of a $\mathbb Z$ - or $\mathbb R$ -action for which forward proximality and backward proximality are transitive relations is shown to have at most two left minimal ideals. Finally, the notion of near simplicity of the Ellis semigroup is introduced and related to the above.

Type
Original Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Akin, E., Auslander, J. and Glasner, E.. The Topological Dynamics of Ellis Actions ( Memoirs of the American Mathematical Society , 913). American Mathematical Society, Providence, RI, 2008.CrossRefGoogle Scholar
Aujogue, J.-B.. Ellis enveloping semigroup for almost canonical model sets of an Euclidean space. Algebr. Geom. Topol. 15(4) (2015), 21952237.CrossRefGoogle Scholar
Aujogue, J.-B., Barge, M., Kellendonk, J. and Lenz, D.. Equicontinuous factors, proximality and Ellis semigroup for Delone sets. Mathematics of Aperiodic Order (Progress in Mathematics 309). Birkhäuser/Springer, Basel, 2015, pp. 137194.10.1007/978-3-0348-0903-0_5CrossRefGoogle Scholar
Auslander, J.. Minimal Flows and their Extensions ( North-Holland Mathematics Studies , 153, Notas de Matemática [Mathematical Notes], 122). North-Holland, Amsterdam, 1988.Google Scholar
Blanchard, F., Glasner, E., Kolyada, S. and Maass, A.. On Li-Yorke pairs . J. Reine Angew. Math. 547 (2002), 5168.Google Scholar
Coven, E. M., Quas, A. and Yassawi, R.. Computing automorphism groups of shifts using atypical equivalence classes. Discrete Anal. 3 (2016), 28.Google Scholar
Dekking, F. M.. The spectrum of dynamical systems arising from substitutions of constant length. Z. Wahrscheinlichkeitsth. Verw. Geb. 41(3) (1977/1978), 221239.10.1007/BF00534241CrossRefGoogle Scholar
Hindman, N. and Strauss, D.. Algebra in the Stone-Cech Compactification: Theory and Applications. Walter de Gruyter, Berlin, 2011.CrossRefGoogle Scholar
Howie, J. M.. Fundamentals of Semigroup Theory. Vol. 12. Clarendon, Oxford, 1995.Google Scholar
Kellendonk, J. and Yassawi, R.. The Ellis semigroup for bijective substitutions. Preprint, 2019, arXiv:math.DS1908.05690.Google Scholar
Petrich, M. and Reilly, N. R.. Completely Regular Semigroups. Vol. 27. John Wiley & Sons, New York, 1999.Google Scholar