Abstract
Let (G, D) be a flow such that D is a dendrite and G is a finitely generated group. Denote by E(D) the set of endpoints of D. In this paper, it is shown that if E(D) is closed and countable then the following properties are equivalent:
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(1)
(G, D) is pointwise periodic;
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(2)
(G, D) is pointwise almost periodic;
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(3)
The orbit closure relation is closed;
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(4)
(G, D) is equicontinuous.
In addition, we show that if E(D) is countable, then (G, D) is not a minimal flow. We also show that if (G, D) is a pointwise periodic flow and if D does not contain any homeomorphic copy of special dendrites, then the action of G can factor through a finite group action.
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References
Auslander, J.: Minimal Flows and Their Extensions. North Holland, Amsterdam (1988)
Auslander, J., Glasner, E., Weiss, B.: On recurrence in zero dimensional flows. Forum Mathematicum. 19(1), 107–114 (2007)
Arevalo, D., Charatonik, W.J., Covarrubias, P.P., Simon, L.: Dendrites with a closed set of end points. Topol. Appl. 115, 1–17 (2001)
Beardon, A.F.: Iteration of Rational Functions. Springer, New York (1991)
Barbachine, E.: Sur la conduite des points sous les transformations homéomorphes de l’espace. C.R. (Doklady) Acad. Sci. URSS 51, 3–5 (1946)
Balibrea, F.: Studies on dendrites and the periodic-recurrent property. Extracta Mathematicae 25(3), 211–226 (2010)
Bowditch, B.H.: Treelike Structures Arising from Continua and Convergence Groups, Mem. Amer. Math. Soc., 662, Amer. Math. Soc., Providence (1999)
Charatonik, J.J., Charatonik, W.J.: Dendrites. Aprotactions Math. 22, 227–253 (1998)
Charatonik, J.J.: On sets of periodic and of recuurent points. Publ. Inst. Math. 63(77), 131–142 (1998)
Culler, M., Morgan, J.W.: Group actions on R-trees. Proc. Lond. Math. Soc. s3–55(3), 571–604 (1987)
Elkacimi, A., Hattab, H., Salhi, E.: Remarque sur certains groupes d’homémorphismes d’espaces métriques. JP J. Geom. Topol. 4(3), 225–242 (2004)
Epstein, D.A.: A Topology for the Space of Foliations. Lecture Notes in Math., vol. 597, pp. 132–150 (1977)
Glasner, E.: Ergodic Theory Via Joinings, Mathematical Surveys and Monographs, vol. 101. American Mathematical Society, Providence (2003)
Gottschalk, W.H., Hedlund, G.A.: Topological Dynamics. AMS Colloquium Publications, Providence (1955)
Hattab, H.: Group of homeomorphisms of a metric space with finite orbits. JP. Geom. Topol. 2, 115–128 (2004)
Hattab, H.: Pointwise recurrent one-dimensional flows. Dyn. Syst. Int. J. 26(1), 77–83 (2011)
Jmel, A.: Pointwise periodic homeomorphisms on dendrites. Dyn. Syst. 30(1), 34–44 (2015)
Mai, J.H., Shi, E.H.: The nonexistence of expansive commutative group actions on Peano continua having free dendrites. Topol. Appl. 155, 33–38 (2007)
Mai, J.H., Shi, E.H.: \(\overline{R} = \overline{P}\) for maps of dendrites X with \(Card(End(X)) < c\). Int. J. Bifurcat. Chaos 19(4), 1391–1396 (2009)
Malyutin, A.V.: Pretrees and the shadow topology. St. Petersburg Math. J. 26, 225–271 (2015)
Mayer, J.C., Nikiel, J., Oversteegen, L.G.: Universal spaces for R-trees. Trans. Am. Math. Soc. 334, 411–432 (1992)
Naghmouchi, I.: Pointwise recurrent dendrite maps. Ergod. Theory Dyn. Syst. 33, 1115–1123 (2013)
Nadler, S.B.: Continuum Theory. Marcel Dekker, Inc, New York (1992)
Niemytzki, V.: Les systèmes dynamiques généraux. C.R. (Doklady) Acad. Sci. URSS 53, 491–494 (1946)
Roberson, F.A.: Recurrence and almost periodicity in a generative transformation. Proc. Am. Math. Soc. 32, 596–598 (1972)
Shi, E.H., Wang, S., Zhou, L.: Minimal group actions on dendrites. Proc. Am. Math. Soc. 138, 217–223 (2010)
Shi, E.H., Sun, B.Y.: Fixed point properties of nilpotent group actions on 1-arcwise connected continua. Proc. Am. Math. Soc. 137, 771–775 (2009)
de Vries, J.: Element of Topological Dynamics, Mathematics and Its Application, vol. 257. Kluwer, Dordrecht (1993)
Wang, S., Shi, E.H., Zhou, L.: Topological transitivity and chaos of group action on dendrites. Int. J. Bifurcat. Chaos 19(12), 4165–4174 (2009)
Whyburn, G.T.: Analytic Topology, vol. 28. Providence, RI: American Mathematical Society; 1942; reprinted with corrections (1971)
Ward, L.E.: On dendritic sets. Duke Math. J. 25, 505–513 (1958)
Yokoyama, T.: Recurrence, pointwise almost periodicity and orbit closure relation for flows and foliations. Topol. Appl. 160(17), 2196–2206 (2013)
Zafridou, S.: Universal dendrites for some families of dendrites with a countable set of endpoints. Topol. Appl. 155(17–18), 1935–1946 (2008)
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The authors are grateful to the handling editor and anonymous referees for their careful reading and constructive suggestions which lead to truly significant improvement of the paper.
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This work is supported by the laboratory of research “Dynamical systems and combinatorics” University of Sfax, Tunisia.
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Haj Salem, A., Hattab, H. Dendrite Flows. Qual. Theory Dyn. Syst. 16, 623–634 (2017). https://doi.org/10.1007/s12346-017-0237-0
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DOI: https://doi.org/10.1007/s12346-017-0237-0