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Composition operators on μ-Bloch spaces

Part of: Linear function spaces and their duals Holomorphic functions of several complex variables Special classes of linear operators

Published online by Cambridge University Press:  20 November 2018

Huaihui Chen  and
Paul Gauthier
Huaihui Chen
Affiliation:
Department of Mathematics, Nanjing Normal University, Nanjing 210097, P.R.China, hhchen@njnu.edu.cn
Paul Gauthier
Affiliation:
Mathématiques et statistique, Université de Montréal, CP-6128 Centre Ville, Montréal, QC, H3C 3J7, gauthier@dms.umontreal.ca
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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.

MSC classification

Primary: 47B33: Composition operators
Secondary: 32A18: Bloch functions, normal functions 32A70: Functional analysis techniques 46E15: Banach spaces of continuous, differentiable or analytic functions

Information

Type
Research Article
Information
Canadian Journal of Mathematics , Volume 61 , Issue 1 , 01 February 2009 , pp. 50 - 75
Copyright
Copyright © Canadian Mathematical Society 2009

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