{ "id": "2312.13548", "version": "v1", "published": "2023-12-21T03:19:01.000Z", "updated": "2023-12-21T03:19:01.000Z", "title": "Matrix-Weighted Besov-Type and Triebel--Lizorkin-Type Spaces II: Sharp Boundedness of Almost Diagonal Operators", "authors": [ "Fan Bu", "Tuomas Hytönen", "Dachun Yang", "Wen Yuan" ], "comment": "We split the article arXiv:2304.00292 into three articles and this is the second one", "categories": [ "math.FA", "math.AP", "math.CA" ], "abstract": "This article is the second one of three successive articles of the authors on the matrix-weighted Besov-type and Triebel--Lizorkin-type spaces. In this article, the authors obtain the sharp boundedness of almost diagonal operators on matrix-weighted Besov-type and Triebel--Lizorkin-type sequence spaces. These results not only possess broad generality but also improve most cases of existing almost diagonal conditions of matrix-weighted Besov and Triebel--Lizorkin sequence spaces and even also weighted Besov-type and Triebel--Lizorkin-type sequence spaces into sharp ones via using $A_p$-dimensions of matrix weights and their elaborate properties in terms of reducing operators obtained by the same authors in the first article of this series.", "revisions": [ { "version": "v1", "updated": "2023-12-21T03:19:01.000Z" } ], "analyses": { "subjects": [ "46E35", "47A56", "42B25", "42B35" ], "keywords": [ "matrix-weighted besov-type", "triebel-lizorkin-type spaces", "sharp boundedness", "diagonal operators", "triebel-lizorkin-type sequence spaces" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }