{ "id": "2207.02176", "version": "v1", "published": "2022-07-05T17:11:38.000Z", "updated": "2022-07-05T17:11:38.000Z", "title": "Almost everywhere convergence for Lebesgue differentiation processes along rectangles", "authors": [ "Emma D'Aniello", "Anthony Gauvan", "Laurent Moonens", "Joseph M. Rosenblatt" ], "categories": [ "math.CA" ], "abstract": "In this paper, we study Lebesgue differentiation processes along rectangles $R_k$ shrinking to the origin in the Euclidean plane, and the question of their almost everywhere convergence in $L^p$ spaces. In particular, classes of examples of such processes failing to converge a.e. in $L^\\infty$ are provided, for which $R_k$ is known to be oriented along the slope $k^{-s}$ for $s>0$, yielding an interesting counterpart to the fact that the directional maximal operator associated to the set $\\{k^{-s}:k\\in\\mathbb{N}^*\\}$ fails to be bounded in $L^p$ for any $1\\leq p<\\infty$.", "revisions": [ { "version": "v1", "updated": "2022-07-05T17:11:38.000Z" } ], "analyses": { "subjects": [ "42B25", "26B05", "42B35" ], "keywords": [ "rectangles", "convergence", "study lebesgue differentiation processes", "directional maximal operator", "euclidean plane" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }