{ "id": "1805.07655", "version": "v1", "published": "2018-05-19T21:08:08.000Z", "updated": "2018-05-19T21:08:08.000Z", "title": "Coboundaries of nonconventional ergodic averages", "authors": [ "Idris Assani" ], "comment": "Results obtained during the 2017 ETDS workshop UNC-CH and presented during the 2018 UNC-CH ETDS workshop", "categories": [ "math.DS" ], "abstract": "Let $(X,\\mathcal{A}, \\mu)$ be a probability measure space and let $T_i,$ $1\\leq i\\leq H,$ be invertible bi measurable measure preserving transformations on this measure space. We give a sufficient condition for the product of $H$ bounded functions $f_1, f_2, ..., f_H$ to be a coboundary. This condition turns out to be also necessary when one seeks bounded coboundaries.", "revisions": [ { "version": "v1", "updated": "2018-05-19T21:08:08.000Z" } ], "analyses": { "subjects": [ "37A40", "37A30" ], "keywords": [ "nonconventional ergodic averages", "coboundary", "bi measurable measure preserving transformations", "probability measure space", "invertible bi measurable measure" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }