Title

A Beurling Theorem For Generalized Hardy Spaces On A Multiply Connected Domain

Keywords

AõLiated operator; Beurling theorem; Forelli projection; Gauge norm; Generalized Hardy space; Inner-outer factorization; Invariant subspace; Multiply connected domain

Abstract

The object of this paper is to prove a version of the Beurling-Helson-Lowdenslager invariant subspace theorem for operators on certain Banach spaces of functions on a multiply connected domain in C. The norms for these spaces are either the usual Lebesgue and Hardy space norms or certain continuous gauge norms. In the Hardy space case the expected corollaries include the characterization of the cyclic vectors as the outer functions in this context, a demonstration that the set of analytic multiplication operators is maximal abelian and reflexive, and a determination of the closed operators that commute with all analytic multiplication operators.

Publication Date

6-1-2018

Publication Title

Canadian Journal of Mathematics

Volume

70

Issue

3

Number of Pages

515-537

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.4153/CJM-2017-007-8

Socpus ID

85048804555 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85048804555

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