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Free interpolation for the Zygmund class

Free interpolation for the Zygmund class AbstractWe introduce interpolation sets for the Zygmund class 𝒵{\mathcal{Z}}in the unit disc of the complex plane. This space lies between the Lipschitz classes of order α, 0<α<1{0<\alpha<1}, and the class of order α=1{\alpha=1}, whose interpolation sets are given in a different way.We prove that the interpolation sets for 𝒵{\mathcal{Z}}are interpolation sets for the Lipschitz classes of order α, 0<α<1{0<\alpha<1}, and the latter are interpolation sets for a space slightly larger than 𝒵{\mathcal{Z}}. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Georgian Mathematical Journal de Gruyter

Free interpolation for the Zygmund class

Tugores, Francesc; Tugores, Laia
Georgian Mathematical Journal , Volume 28 (6): 5 – Dec 1, 2021
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Publisher
de Gruyter
Copyright
© 2021 Walter de Gruyter GmbH, Berlin/Boston
ISSN
1572-9176
eISSN
1572-9176
DOI
10.1515/gmj-2021-2103
Publisher site
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Abstract

AbstractWe introduce interpolation sets for the Zygmund class 𝒵{\mathcal{Z}}in the unit disc of the complex plane. This space lies between the Lipschitz classes of order α, 0<α<1{0<\alpha<1}, and the class of order α=1{\alpha=1}, whose interpolation sets are given in a different way.We prove that the interpolation sets for 𝒵{\mathcal{Z}}are interpolation sets for the Lipschitz classes of order α, 0<α<1{0<\alpha<1}, and the latter are interpolation sets for a space slightly larger than 𝒵{\mathcal{Z}}.

Journal

Georgian Mathematical Journal – de Gruyter

Published: Dec 1, 2021

Keywords: Interpolation set; Zygmund class; Lipschitz classes; separation conditions; 30E05; 30H50; 30J10

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