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Polynomial approximation and~composition~operators.

Authors :
Cao, Guangfu
He, Li
Zhu, Kehe
Source :
Proceedings of the American Mathematical Society; Sep2021, Vol. 149 Issue 9, p3715-3724, 10p
Publication Year :
2021

Abstract

We study the relationship between polynomial approximations in the Bergman space of certain simply connected domains in the complex plane and composition operators on the Dirichlet space of the unit disk. In particular, we characterize when a composition operator on the Dirichlet space has dense range, which settles a problem posed by Joseph Cima in 1976. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00029939
Volume :
149
Issue :
9
Database :
Complementary Index
Journal :
Proceedings of the American Mathematical Society
Publication Type :
Academic Journal
Accession number :
151583488
Full Text :
https://doi.org/10.1090/proc/14455