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JOURNALS // Vladikavkazskii Matematicheskii Zhurnal // Archive

Vladikavkaz. Mat. Zh., 2020 Volume 22, Number 3, Pages 112–123 (Mi vmj737)

Bounded composition operators on weighted function spaces in the unit disk

Sh. Huaa, Le Hai Khoia, Ph. T. Tienbc

a School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
b University of Science, Vietnam National University, 334 Nguyen Trai St., Hanoi, Vietnam
c TIMAS, Thang Long University, Nghiem Xuan Yem, Hoang Mai, Hanoi, Vietnam

Abstract: We introduce a general class of weighted spaces $\mathscr{H}(\beta)$ of holomorphic functions in the unit disk $\mathbb{D}$, which contains several classical spaces, such as Hardy space, Bergman space, Dirichlet space. We characterize boundedness of composition operators $C_{\varphi}$ induced by affine and monomial symbols $\varphi$ on these spaces $\mathscr{H}(\beta)$. We also establish a sufficient condition under which the operator $C_{\varphi}$ induced by the symbol $\varphi$ with relatively compact image $\varphi(\mathbb{D})$ in $\mathbb{D}$ is bounded on $\mathscr{H}(\beta)$. Note that in the setting of $\mathscr{H}(\beta)$, the characterizations of boundedness of composition operators $C_{\varphi}$ depend closely not only on functional properties of the symbols $\varphi$ but also on the behavior of the weight sequence $\beta$.

Key words: composition operator, weighted space, weight sequence, holomorphic function, unit disk.

UDC: 517.98

MSC: 30D15, 47B37

Received: 08.06.2020

Language: English

DOI: 10.46698/p4238-0191-2122-t



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