Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4664386 | Acta Mathematica Scientia | 2011 | 7 Pages |
Abstract
Let T: X → X be a uniformly continuous homeomorphism on a non-compact metric space (X,d). Denote by X* = X ∪ {x*} the one point compactification of X and T* : X* → X* the homeomorphism on X* satisfying T*∣X=T and T*x*=x*. We show that their topological entropies satisfy hd(T, X)≥ h(T*, X*) if X is locally compact. We also give a note on Katok's measure theoretic entropy on a compact metric space.
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