{ "id": "1505.00518", "version": "v1", "published": "2015-05-04T03:23:37.000Z", "updated": "2015-05-04T03:23:37.000Z", "title": "$\\mathbf A_1$-regularity and boundedness of Calderón-Zygmund operators. II", "authors": [ "Dmitry V. Rutsky" ], "categories": [ "math.FA" ], "abstract": "A proof is given for the \"only if\" part of the result stated in the previous article of the series that a suitably nondegenerate Calder\\'on-Zygmund operator $T$ is bounded in a Banach lattice $X$ on $\\mathbb R^n$ if and only if the Hardy-Littlewood maximal operator $M$ is bounded in both $X$ and $X'$, under the assumption that $X$ has the Fatou property and $X$ is $p$-convex and $q$-concave with some $1 < p, q < \\infty$. We also get rid of a fixed point theorem in the proof of the main lemma and give an improved version of an earlier result concerning the divisibility of $\\mathrm {BMO}$-regularity.", "revisions": [ { "version": "v1", "updated": "2015-05-04T03:23:37.000Z" } ], "analyses": { "subjects": [ "46B42", "42B25", "42B20", "46E30", "47B38" ], "keywords": [ "calderón-zygmund operators", "regularity", "boundedness", "hardy-littlewood maximal operator", "suitably nondegenerate calderon-zygmund operator" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }