Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces

The spaces of pointwise multipliers on Morrey spaces are described in terms of Morrey spaces, their preduals, and vector-valued Morrey spaces introduced by Ho. This paper covers weak Morrey spaces as well. The result in the present paper completes the characterization of the earlier works of the fir...

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Main Authors: Eiichi Nakai, Yoshihiro Sawano
Format: Article
Language:English
Published: MDPI AG 2021-10-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/9/21/2754
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author Eiichi Nakai
Yoshihiro Sawano
author_facet Eiichi Nakai
Yoshihiro Sawano
author_sort Eiichi Nakai
collection DOAJ
description The spaces of pointwise multipliers on Morrey spaces are described in terms of Morrey spaces, their preduals, and vector-valued Morrey spaces introduced by Ho. This paper covers weak Morrey spaces as well. The result in the present paper completes the characterization of the earlier works of the first author’s papers written in 1997 and 2000, as well as Lemarié-Rieusset’s 2013 paper. As a corollary, the main result in the present paper shows that different quasi-Banach lattices can create the same vector-valued Morrey spaces. The goal of the present paper is to provide a complete picture of the pointwise multiplier spaces.
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spelling doaj.art-d7ac321079f441e990267e926d6d6b5b2023-11-22T21:18:22ZengMDPI AGMathematics2227-73902021-10-01921275410.3390/math9212754Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey SpacesEiichi Nakai0Yoshihiro Sawano1Department of Mathematics, Ibaraki University, Mito 310-8512, Ibaraki, JapanDepartment of Mathematics, Chuo University, 1-13-27, Kasuga 112-8551, Bunkyo, JapanThe spaces of pointwise multipliers on Morrey spaces are described in terms of Morrey spaces, their preduals, and vector-valued Morrey spaces introduced by Ho. This paper covers weak Morrey spaces as well. The result in the present paper completes the characterization of the earlier works of the first author’s papers written in 1997 and 2000, as well as Lemarié-Rieusset’s 2013 paper. As a corollary, the main result in the present paper shows that different quasi-Banach lattices can create the same vector-valued Morrey spaces. The goal of the present paper is to provide a complete picture of the pointwise multiplier spaces.https://www.mdpi.com/2227-7390/9/21/2754pointwise multipliersMorrey spacesblock spacesconvexification
spellingShingle Eiichi Nakai
Yoshihiro Sawano
Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
Mathematics
pointwise multipliers
Morrey spaces
block spaces
convexification
title Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
title_full Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
title_fullStr Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
title_full_unstemmed Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
title_short Spaces of Pointwise Multipliers on Morrey Spaces and Weak Morrey Spaces
title_sort spaces of pointwise multipliers on morrey spaces and weak morrey spaces
topic pointwise multipliers
Morrey spaces
block spaces
convexification
url https://www.mdpi.com/2227-7390/9/21/2754
work_keys_str_mv AT eiichinakai spacesofpointwisemultipliersonmorreyspacesandweakmorreyspaces
AT yoshihirosawano spacesofpointwisemultipliersonmorreyspacesandweakmorreyspaces