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Composition operators on μ-Bloch spaces

Published online by Cambridge University Press:  20 November 2018

Huaihui Chen
Affiliation:
Department of Mathematics, Nanjing Normal University, Nanjing 210097, P.R.China, [email protected]
Paul Gauthier
Affiliation:
Mathématiques et statistique, Université de Montréal, CP-6128 Centre Ville, Montréal, QC, H3C 3J7, [email protected]
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Abstract

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Given a positive continuous function $\mu $ on the interval $0\,<\,t\,\le \,1$, we consider the space of so-called $\mu $-Bloch functions on the unit ball. If $\mu \left( t \right)\,=\,t$, these are the classical Bloch functions. For $\mu $, we define a metric $F_{z}^{\mu }\left( u \right)$ in terms of which we give a characterization of $\mu $-Bloch functions. Then, necessary and sufficient conditions are obtained in order that a composition operator be a bounded or compact operator between these generalized Bloch spaces. Our results extend those of Zhang and Xiao.

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2009

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