Session 16. Ergodic Theory and Dynamical Systems

Topological and measure-theoretical entropies of nonautonomous dynamical systems

Andrzej Biś, University of Łódź, Poland
We study the nonautonomous discrete dynamical system ( NADDS, for simplicity) given by a sequence \(\{f_n\}_{n=1}^{\infty}\) of continuous self-maps of a compact metric space \(X\). Different aspects of dynamics of NADDS (such as topological entropy, measure-theoretical entropy, minimality) were studied in [2], [5], [3]. We will describe a generalization of the notion of local measure entropy, introduced by Brin and Katok [1] for a single map, to NADDS.

Finally, we apply the theory of dimensional type characteristics of a dynamical system, elaborated by Pesin [4], to obtain a relationship between topological entropy of NADDS and its local measure entropies. We intend to present NADDS-homogeneous measures and recall some of their properties.

References
  1. M. Brin, A. Katok, On local entropy , in Geometric Dynamics, Lecture Notes in Math., Vol. 1007, Springer, Berlin (1983), 30-38.
  2. S. Kolyada, L. Snoha, Topological entropy of nonautonomous dynamical systems , Random and Computational Dynamics 4, 1996, 205-233.
  3. S. Kolyada, L.Snoha and S.Trofimchuk, On minimality of nonautonomous dynamical systems , Nonlinear Oscilations 7, 2004, 83-89.
  4. Ya. Pesin, Dimension Theory in Dynamical Systems , Chicago Lectures in Mathematics, The University of Chicago Press, Chicago, 1997.
  5. Y. Zhu, Z. Liu, W. Zhang, Entropy of nonautonomous dynamical systems , J. Korean Math. Soc 49, 2012, 165-185.
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