Ramsey Shadowing and minimal points (Q2796743)

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scientific article; zbMATH DE number 6560795
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Ramsey Shadowing and minimal points
scientific article; zbMATH DE number 6560795

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    Ramsey Shadowing and minimal points (English)
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    29 March 2016
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    metric system
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    Ramsey shadowing
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    minimal point
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    A further investigation is carried out upon the Ramsey shadowing property over compact Hausdorff spaces and/or metrizable ones. The main results are as follows.NEWLINENEWLINETheorem 1. Ramsey shadowing is equivalent to local Ramsey shadowing in any metric system.NEWLINENEWLINETheorem 2. Let \(X\) be any dynamical system. The following are equivalent:NEWLINENEWLINE(i) \(X\) has Ramsey shadowingNEWLINENEWLINE(ii) \(X\) has a dense set of minimal pointsNEWLINENEWLINE(iii) For any open \(U\subseteq X\), there is some \(x\in U\) such that \(N(x,U)\) is syndeticNEWLINENEWLINE(iv) For any open \(U\subseteq X\), there is some \(x\in U\) such that \(N(x,U)\) is piecewise syndetic.NEWLINENEWLINEFinally, some consequences of these results are also stated and discussed.
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