{ "id": "2212.07830", "version": "v1", "published": "2022-12-15T13:39:18.000Z", "updated": "2022-12-15T13:39:18.000Z", "title": "Disjointness with all minimal systems under group actions", "authors": [ "Hui Xu", "Xiangdong Ye" ], "comment": "32pages", "categories": [ "math.DS" ], "abstract": "Let $G$ be a countable discrete group. We give a necessary and sufficient condition for a transitive $G$-system to be disjoint with all minimal $G$-systems, which implies that if a transitive $G$-system is disjoint with all minimal $G$-systems, then it is $\\infty$-transitive, i.e. $(X^k,G)$ is transitive for all $k\\in\\N$, and has dense minimal points. In addition, we show that any $\\infty$-transitive $G$-system with dense distal points are disjoint with all minimal $G$-systems.", "revisions": [ { "version": "v1", "updated": "2022-12-15T13:39:18.000Z" } ], "analyses": { "subjects": [ "37B05" ], "keywords": [ "minimal systems", "group actions", "disjointness", "dense minimal points", "transitive" ], "note": { "typesetting": "TeX", "pages": 32, "language": "en", "license": "arXiv", "status": "editable" } } }