Amb motiu del tancament d'estiu, la validació de documents es reprendrà a partir del 28 d'agost de 2026. Disculpeu les molèsties.
Con motivo del cierre de verano, la validación de documentos se reanudará a partir del 28 de agosto de 2026. Disculpad las molestias
Due to the summer closure, document validation will resume starting August 28, 2026. We apologize for any inconvenience.

Document type

Article

Version

Accepted version

Publication date

All rights reserved

Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/197005

Contractive inequalities for Hardy spaces

Journal Title

Director/Tutor

Journal ISSN

Volume Title

Abstract

We state and discuss several interrelated results, conjectures, and questions regarding contractive inequalities for classical $H^p$ spaces of the unit disc. We study both coefficient estimates in terms of weighted $\ell^2$ sums and the Riesz projection viewed as a map from $L^q$ to $H^p$ with $q \geq p$. Some numerical evidence is given that supports our conjectures.

Citation

Citation

BREVIG, Ole Fredrik, et al. Contractive inequalities for Hardy spaces. Functiones et Approximatio. Commentarii Mathematici. Vol.  2018, num. 59, pags. 1. ISSN 0208-6573. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/197005

Export metadata

JSON - METS

Share record