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Rotational entropy for annulus homeomorphisms - MaRDI portal

Rotational entropy for annulus homeomorphisms (Q916177)

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scientific article; zbMATH DE number 4153528
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English
Rotational entropy for annulus homeomorphisms
scientific article; zbMATH DE number 4153528

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    Rotational entropy for annulus homeomorphisms (English)
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    1991
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    We study admissible rotational behaviors of the orbits of annulus homeomorphisms, isotopic to the identity. Namely, we introduce a topological invariant, designated ``rotational entropy'', that quantifies the rotational complexity of a given mapping. The main result in the paper establishes that: Any annulus homeomorphism, isotopic to the identity, with finitely many periods has zero rotational entropy.
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    annulus homeomorphism
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    rotational entropy
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