{ "id": "1909.03061", "version": "v1", "published": "2019-09-06T13:14:50.000Z", "updated": "2019-09-06T13:14:50.000Z", "title": "Orbital shadowing, $ω$-limit sets and minimality", "authors": [ "Joel Mitchell" ], "comment": "7 pages. arXiv admin note: text overlap with arXiv:1907.02446", "categories": [ "math.DS" ], "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.", "revisions": [ { "version": "v1", "updated": "2019-09-06T13:14:50.000Z" } ], "analyses": { "subjects": [ "37B99", "54H20" ], "keywords": [ "limit sets", "minimality", "minimal system", "uniform time period", "compact hausdorff space" ], "note": { "typesetting": "TeX", "pages": 7, "language": "en", "license": "arXiv", "status": "editable" } } }