{ "id": "2203.01122", "version": "v1", "published": "2022-03-02T14:20:06.000Z", "updated": "2022-03-02T14:20:06.000Z", "title": "Mean dimension of natural extension of algebraic systems", "authors": [ "Bingbing Liang", "Ruxi Shi" ], "comment": "10pages. Comments welcome!", "categories": [ "math.DS" ], "abstract": "Mean dimension may decrease after taking natural extension. In this paper we show that mean dimension stays the same after taking natural extension for an endomorphism on a compact metrizable abelian group. As an application, we obtain that the mean dimension of algebraic cellular automaton coincides with its natural extension, which strengthens a result of Burguet and Shi \\cite{BS21} with a different proof.", "revisions": [ { "version": "v1", "updated": "2022-03-02T14:20:06.000Z" } ], "analyses": { "keywords": [ "natural extension", "algebraic systems", "algebraic cellular automaton coincides", "mean dimension stays", "compact metrizable abelian group" ], "note": { "typesetting": "TeX", "pages": 10, "language": "en", "license": "arXiv", "status": "editable" } } }