On notions of determinism in topological dynamics

Details On notions of determinism in topological dynamics On notions of determinism in topological dynamics

2009-01-23

arxiv.org/abs/0901.3606v3

Mathematics

Dynamical Systems

27 pages; minor corrections to old version

Scientific paper

We examine the relation between topological entropy, invertability, and prediction in topological dynamics. We show that topological determinism in the sense of Kamisky Siemaszko and Szymaski imposes no restriction on invariant measures except zero entropy. Also, we develop a new method for relating topological determinism and zero entropy, and apply it to obtain a multidimensional analog of this theory. We examine prediction in symbolic dynamics and show that while the condition that each past admit a unique future only occurs in finite systems, the condition that each past have a bounded number of future imposes no restriction on invariant measures except zero entropy. Finally, we give a negative answer to a question of Eli Glasner by constructing a zero-entropy system with a globally supported ergodic measure in which every point has multiple preimages.

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