Abstract
In this work, on the one hand, we survey and amplify old results concerning tame dynamical systems and, on the other, prove some new results and exhibit new examples of such systems. In particular, we study tame symbolic systems and establish a neat characterization of tame subshifts. We also provide sufficient conditions which ensure that certain coding functions are tame. Finally we discuss examples where certain universal dynamical systems associated with some Polish groups are tame.
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Notes
- 1.
An earlier version of this work is posted on the Arxiv (arXiv:1405.2588).
- 2.
Actually this possibility can not occur, as is shown in the first step of the proof.
- 3.
E.g., this latter condition is always satisfied when Y is distal. Another example of such (non-distal) system is the Sturmian system.
- 4.
Modulo an extension of Weiss’ theorem, which does not yet exist, a similar idea would work for any locally compact group. The more general statement would be: A locally compact group which is intrinsically tame is compact.
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Acknowledgements
This research was supported by a grant of Israel Science Foundation (ISF 668/13). The first named author thanks the Hausdorff Institute at Bonn for the opportunity to participate in the Program “Universality and Homogeneity” where part of this work was written, November 2013.
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Glasner, E., Megrelishvili, M. (2018). More on Tame Dynamical Systems. In: Ferenczi, S., Kułaga-Przymus, J., Lemańczyk, M. (eds) Ergodic Theory and Dynamical Systems in their Interactions with Arithmetics and Combinatorics. Lecture Notes in Mathematics, vol 2213. Springer, Cham. https://doi.org/10.1007/978-3-319-74908-2_18
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