Lowering topological entropy over subsets
Dynamical Systems
2011-07-06 v2 General Topology
Abstract
Let be a topological dynamical system (TDS), and the topological entropy of a subset of . is {\it lowerable} if for each there is a non-empty compact subset with entropy ; is {\it hereditarily lowerable} if each non-empty compact subset is lowerable; is {\it hereditarily uniformly lowerable} if for each non-empty compact subset and each there is a non-empty compact subset with and has at most one limit point. It is shown that each TDS with finite entropy is lowerable, and that a TDS is hereditarily uniformly lowerable if and only if it is asymptotically -expansive.
Keywords
Cite
@article{arxiv.0811.4230,
title = {Lowering topological entropy over subsets},
author = {Wen Huang and Xiangdong Ye and Guohua Zhang},
journal= {arXiv preprint arXiv:0811.4230},
year = {2011}
}
Comments
All comments are welcome. Ergodic Theory and Dynamical Systems, to appear