Two commuting maps without common minimal points

Tomasz Downarowicz

Colloquium Mathematicae (2011)

  • Volume: 123, Issue: 2, page 205-209
  • ISSN: 0010-1354

Abstract

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We construct an example of two commuting homeomorphisms S, T of a compact metric space X such that the union of all minimal sets for S is disjoint from the union of all minimal sets for T. In other words, there are no common minimal points. This answers negatively a question posed in [C-L]. We remark that Furstenberg proved the existence of "doubly recurrent" points (see [F]). Not only are these points recurrent under both S and T, but they recur along the same sequence of powers. Our example shows that nothing similar holds if recurrence is replaced by the stronger notion of uniform recurrence.

How to cite

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Tomasz Downarowicz. "Two commuting maps without common minimal points." Colloquium Mathematicae 123.2 (2011): 205-209. <http://eudml.org/doc/284111>.

@article{TomaszDownarowicz2011,
abstract = {We construct an example of two commuting homeomorphisms S, T of a compact metric space X such that the union of all minimal sets for S is disjoint from the union of all minimal sets for T. In other words, there are no common minimal points. This answers negatively a question posed in [C-L]. We remark that Furstenberg proved the existence of "doubly recurrent" points (see [F]). Not only are these points recurrent under both S and T, but they recur along the same sequence of powers. Our example shows that nothing similar holds if recurrence is replaced by the stronger notion of uniform recurrence.},
author = {Tomasz Downarowicz},
journal = {Colloquium Mathematicae},
keywords = {topological dynamical system; commuting homeomorphisms; minimal set; minimal point},
language = {eng},
number = {2},
pages = {205-209},
title = {Two commuting maps without common minimal points},
url = {http://eudml.org/doc/284111},
volume = {123},
year = {2011},
}

TY - JOUR
AU - Tomasz Downarowicz
TI - Two commuting maps without common minimal points
JO - Colloquium Mathematicae
PY - 2011
VL - 123
IS - 2
SP - 205
EP - 209
AB - We construct an example of two commuting homeomorphisms S, T of a compact metric space X such that the union of all minimal sets for S is disjoint from the union of all minimal sets for T. In other words, there are no common minimal points. This answers negatively a question posed in [C-L]. We remark that Furstenberg proved the existence of "doubly recurrent" points (see [F]). Not only are these points recurrent under both S and T, but they recur along the same sequence of powers. Our example shows that nothing similar holds if recurrence is replaced by the stronger notion of uniform recurrence.
LA - eng
KW - topological dynamical system; commuting homeomorphisms; minimal set; minimal point
UR - http://eudml.org/doc/284111
ER -

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