{ "id": "2003.04019", "version": "v1", "published": "2020-03-09T10:16:18.000Z", "updated": "2020-03-09T10:16:18.000Z", "title": "Dyadic representation theorem using smooth wavelets with compact support", "authors": [ "Tuomas Hytönen", "Stefanos Lappas" ], "comment": "16 pages", "categories": [ "math.CA" ], "abstract": "The representation of a general Calder\\'on--Zygmund operator in terms of dyadic Haar shift operators first appeared as a tool to prove the $A_2$ theorem, and it has found a number of other applications. In this paper we prove a new dyadic representation theorem by using smooth compactly supported wavelets in place of Haar functions. A key advantage of this is that we achieve a faster decay of the expansion when the kernel of the general Calder\\'on--Zygmund operator has additional smoothness.", "revisions": [ { "version": "v1", "updated": "2020-03-09T10:16:18.000Z" } ], "analyses": { "subjects": [ "42B20", "42C40" ], "keywords": [ "dyadic representation theorem", "smooth wavelets", "compact support", "general calderon-zygmund operator", "dyadic haar shift operators first" ], "note": { "typesetting": "TeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable" } } }