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A Cesàro-like operator from a class of analytic function spaces to analytic Besov spaces

Part of: Special classes of linear operators Spaces and algebras of analytic functions

Published online by Cambridge University Press:  07 April 2025

Pengcheng Tang
Pengcheng Tang*
Affiliation:
School of Mathematics and Statistics, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China
*
e-mail: www.tang-tpc.com@foxmail.com
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Abstract

Let $\mu $ be a finite positive Borel measure on $[0,1)$ and $f(z)=\sum _{n=0}^{\infty }a_{n}z^{n} \in H(\mathbb {D})$. For $0<\alpha <\infty $, the generalized Cesàro-like operator $\mathcal {C}_{\mu ,\alpha }$ is defined by

$$ \begin{align*}\mathcal {C}_{\mu,\alpha}(f)(z)=\sum^\infty_{n=0}\left(\mu_n\sum^n_{k=0}\frac{\Gamma(n-k+\alpha)}{\Gamma(\alpha)(n-k)!}a_k\right)z^n, \ z\in \mathbb{D}, \end{align*} $$

where, for $n\geq 0$, $\mu _n$ denotes the nth moment of the measure $\mu $, that is, $\mu _n=\int _{0}^{1} t^{n}d\mu (t)$.

For $s>1$, let X be a Banach subspace of $H(\mathbb {D})$ with $\Lambda ^{s}_{\frac {1}{s}}\subset X\subset \mathcal {B}$. In this article, for $1\leq p <\infty $, we characterize the measure $\mu $ for which $\mathcal {C}_{\mu ,\alpha }$ is bounded (resp. compact) from X into the analytic Besov space $B_{p}$.

Keywords

Cesàro operatorBloch spaceBesov space

MSC classification

Primary: 47B35: Toeplitz operators, Hankel operators, Wiener-Hopf operators
Secondary: 30H30: Bloch spaces 30H20: Bergman spaces, Fock spaces

Information

Type
Article
Information
Canadian Mathematical Bulletin , Volume 68 , Issue 4 , December 2025 , pp. 1210 - 1222
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Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of Canadian Mathematical Society

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Footnotes

The author was supported by the Scientific Research Fund of Hunan Provincial Education Department (No. 24C0226).

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