{ "id": "2010.06146", "version": "v1", "published": "2020-10-13T03:39:02.000Z", "updated": "2020-10-13T03:39:02.000Z", "title": "Strongly mixing systems are almost strongly mixing of all orders", "authors": [ "Vitaly Bergelson", "Rigoberto Zelada" ], "comment": "36 pages", "categories": [ "math.DS" ], "abstract": "We prove that any strongly mixing action of a countable abelian group on a probability space has higher order mixing properties. This is achieved via introducing and utilizing $\\mathcal R$-limits, a notion of convergence which is based on the classical Ramsey Theorem. $\\mathcal R$-limits are intrinsically connected with a new combinatorial notion of largeness which is similar to but has stronger properties than the classical notions of IP$^*$ and uniform density one. We also demonstrate the versatility of this new approach by obtaining applications to higher order mixing properties of weakly and mildly mixing systems.", "revisions": [ { "version": "v1", "updated": "2020-10-13T03:39:02.000Z" } ], "analyses": { "subjects": [ "37A25" ], "keywords": [ "strongly mixing systems", "higher order mixing properties", "uniform density", "probability space", "stronger properties" ], "note": { "typesetting": "TeX", "pages": 36, "language": "en", "license": "arXiv", "status": "editable" } } }