(Un)boundedness of directional maximal operators through a notion of “Perron capacity” and an application
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- by Emma D’Aniello, Anthony Gauvan and Laurent Moonens
- Proc. Amer. Math. Soc. 151 (2023), 2517-2526
- DOI: https://doi.org/10.1090/proc/16291
- Published electronically: March 14, 2023
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Abstract:
We introduce the notion of Perron capacity of a set of slopes $\Omega \subset \mathbb {R}$. Precisely, we prove that if the Perron capacity of $\Omega$ is finite then the directional maximal operator associated $M_\Omega$ is not bounded on $L^p(\mathbb {R}^2)$ for any $1 < p < \infty$. This allows us to prove that the set \begin{equation*} {\Omega _c} =\left \{ \frac {\cos n}{n}: n\in \mathbb {N}^* \right \} \end{equation*} is not finitely lacunary which answers a question raised by A. Stokolos in private communications to the authors.References
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Bibliographic Information
- Emma D’Aniello
- Affiliation: Dipartimento di Matematica e Fisica, Università degli Studi della Campania “Luigi Vanvitelli”, Viale Lincoln n. 5, 81100 Caserta, Italia
- MR Author ID: 613115
- ORCID: 0000-0001-5872-0869
- Email: emma.daniello@unicampania.it
- Anthony Gauvan
- Affiliation: Laboratoire de Mathématiques d’Orsay, Université Paris-Sud, CNRS UMR8628, Université Paris-Saclay, Bâtiment 307, F-91405 Orsay Cedex, France
- Email: anthony.gauvan@universite-paris-saclay.fr
- Laurent Moonens
- Affiliation: Laboratoire de Mathématiques d’Orsay, Université Paris-Saclay, CNRS UMR 8628, Bâtiment 307, F-91405 Orsay Cedex, France; École Normale Supérieure-PSL University, CNRS UMR 8553, 45, rue d’Ulm, F-75230 Parix Cedex 3, France
- MR Author ID: 815731
- Email: laurent.moonens@universite-paris-saclay.fr, laurent.moonens@ens.fr
- Received by editor(s): June 12, 2022
- Received by editor(s) in revised form: September 1, 2022, and September 22, 2022
- Published electronically: March 14, 2023
- Additional Notes: This research was supported by the École Normale Supérieure, Paris, by the “Gruppo Nazionale per l’Analisi Matematica, la Probabilità e le loro Applicazioni dell’Istituto Nazionale di Alta Matematica F. Severi” and by the project Vain-Hopes within the program Valere of Università degli Studi della Campania “Luigi Vanvitelli”. It was also partially accomplished within the UMI Group TAA “Approximation Theory and Applications”.
- Communicated by: Ariel Barton
- © Copyright 2023 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 151 (2023), 2517-2526
- MSC (2020): Primary 42B25, 26B05; Secondary 42B35
- DOI: https://doi.org/10.1090/proc/16291
- MathSciNet review: 4576317