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arXiv · 1909.03061

Orbital shadowing, $\omega$-limit sets and minimality

Joel Mitchell
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Abstract

Let $X$ be a compact Hausdorff space, with uniformity $\mathscr{U}$, and let $f \colon X \to X$ be a continuous function. For $D \in \mathscr{U}$, a $D$-pseudo-orbit is a sequence $(x_i)$ for which $(f(x_i),x_{i+1}) \in D$ for all indices $i$. In this paper we show that pseudo-orbits trap $\omega$-limit sets in a neighbourhood of prescribed accuracy after a uniform time period. A consequence of this is a generalisation of a result of Pilyugin et al: every system has the second weak shadowing property. By way of further applications we give a characterisation of minimal systems in terms of pseudo-orbits and show that every minimal system exhibits the strong orbital shadowing property.

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Joel Mitchell. 2019-09-06. Orbital shadowing, $\omega$-limit sets and minimality. https://doi.org/10.1016/j.topol.2019.106903

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