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Journal Article

Finite intersection property and dynamical compactness


Kolyada,  Sergiĭ
Max Planck Institute for Mathematics, Max Planck Society;

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Huang, W., Khilko, D., Kolyada, S., Peris, A., & Zhang, G. (2018). Finite intersection property and dynamical compactness. Journal of Dynamics and Differential Equations, 30(3), 1221-1245. doi:10.1007/s10884-017-9600-8.

Cite as: http://hdl.handle.net/21.11116/0000-0004-6226-3
Dynamical compactness with respect to a family as a new concept of chaoticity of a dynamical system was introduced and discussed in Huang et al. (J Differ Equ 260(9):6800–6827, 2016). In this paper we continue to investigate this notion. In particular, we prove that all dynamical systems are dynamically compact with respect to a Furstenberg family if and only if this family has the finite intersection property. We investigate weak mixing and weak disjointness by using the concept of dynamical compactness. We also explore further difference between transitive compactness and weak mixing. As a byproduct, we show that the $\omega_{\mathcal{F}}$-limit and the $\omega$-limit sets of a point may have quite different topological structure. Moreover, the equivalence between multi-sensitivity, sensitive compactness and transitive sensitivity is established for a minimal system. Finally, these notions are also explored in the context of linear dynamics.