{ "id": "1706.07978", "version": "v1", "published": "2017-06-24T16:18:37.000Z", "updated": "2017-06-24T16:18:37.000Z", "title": "Martingale-coboundary decomposition for stationary random fields", "authors": [ "Dalibor Volny" ], "comment": "Stochastics and Dynamics 2017", "categories": [ "math.PR" ], "abstract": "We prove a martingale-coboundary representation for random fields with a completely commuting filtration. For random variables in L2 we present a necessary and sufficient condition which is a generalization of Heyde's condition for one dimensional processes from 1975. For Lp spaces with 2 \\leq p < \\infty we give a necessary and sufficient condition which extends Volny's result from 1993 to random fields and improves condition of El Machkouri and Giraudo from 2016 (arXiv:1410.3062). In application, new weak invariance principle and estimates of large deviations are found.", "revisions": [ { "version": "v1", "updated": "2017-06-24T16:18:37.000Z" } ], "analyses": { "subjects": [ "60G60", "60G42", "60F17" ], "keywords": [ "stationary random fields", "martingale-coboundary decomposition", "sufficient condition", "extends volnys result", "weak invariance principle" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }