{ "id": "0908.0574", "version": "v2", "published": "2009-08-05T02:06:36.000Z", "updated": "2010-11-10T06:34:58.000Z", "title": "Family-independence for topological and measurable dynamics", "authors": [ "Wen Huang", "Hanfeng Li", "Xiangdong Ye" ], "comment": "Minor change. To appear in Trans. Amer. Math. Soc", "journal": "Trans. Amer. Math. Soc. 364 (2012), no. 10, 5209--5245", "categories": [ "math.DS" ], "abstract": "For a family F (a collection of subsets of Z_+), the notion of F-independence is defined both for topological dynamics (t.d.s.) and measurable dynamics (m.d.s.). It is shown that there is no non-trivial {syndetic}-independent m.d.s.; a m.d.s. is {positive-density}-independent if and only if it has completely positive entropy; and a m.d.s. is weakly mixing if and only if it is {IP}-independent. For a t.d.s. it is proved that there is no non-trivial minimal {syndetic}-independent system; a t.d.s. is weakly mixing if and only if it is {IP}-independent. Moreover, a non-trivial proximal topological K system is constructed, and a topological proof of the fact that minimal topological K implies strong mixing is presented.", "revisions": [ { "version": "v2", "updated": "2010-11-10T06:34:58.000Z" } ], "analyses": { "subjects": [ "37B40", "37A35", "37B10", "37A05" ], "keywords": [ "measurable dynamics", "family-independence", "non-trivial minimal", "implies strong", "positive entropy" ], "tags": [ "journal article" ], "publication": { "publisher": "AMS", "journal": "Trans. Amer. Math. Soc." }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0908.0574H" } } }