Expansive homeomorphisms of countable compacta
β Scribed by Hisao Kato; Jong-Jin Park
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 134 KB
- Volume
- 95
- Category
- Article
- ISSN
- 0166-8641
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β¦ Synopsis
In this paper, we give a characterization of countable compacta which admit expansive homeomorphisms. The main result is the following:
Theorem. Let X be a countable compactum and d(X) = Ξ±, where d(X) is the derived degree of X. Then X admits an expansive homeomorphism if and only if Ξ± is not a limit ordinal number.
π SIMILAR VOLUMES
In tl@s paper it is shown thal the problem of studying expansive hom~omo@&rns on a bounded subset of a normed linear space is equivalent to t$z probbm o +udying hear expansive homeomorphisms on a bounded subset of another nozmed Lie pace. If' the first space is a Hilbert space, the second may be tak