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Frame multipliers are an abstract version of Toeplitz operators in frame theory and consist of a composition of a multiplication operator with the analysis and synthesis operators. Whereas the boundedness properties of frame multipliers on…

泛函分析 · 数学 2025-06-24 Peter Balazs , Karlheinz Gröchenig

The usual examples of Bergman spaces consist of the closure of an algebra of holomorphic functions on a domain. One can also take the real part of such functions, but essentially one is looking at the same object. In this paper the author…

复变函数 · 数学 2022-09-07 Mark G. Lawrence

For weighted Toeplitz operators $\T^N_\phi$ defined on spaces of holomorphic functions in the unit ball, we derive regularity properties of the solutions $f$ to the integral equation $\T^N_\phi(f)=h$ in terms of the regularity of the symbol…

复变函数 · 数学 2010-09-17 Carme Cascante , Joan Fabrega , Daniel Pascuas

Let $T:Y\to X$ be a bounded linear operator between two normed spaces. We characterize compactness of $T$ in terms of differentiability of the Lipschitz functions defined on $X$ with values in another normed space $Z$. Furthermore, using a…

泛函分析 · 数学 2019-10-17 Mohammed Bachir , Gonzalo Flores , Sebastián Tapia-García

A two-point algebra is a set of bounded analytic functions on the unit disk that agree at two distinct points $a,b \in \mathbb{D}$. This algebra serves as a multiplier algebra for the family of Hardy Hilbert spaces $H^2_t := \{ f\in H^2 :…

泛函分析 · 数学 2022-10-12 Christopher Felder , Douglas T. Pfeffer , Benjamin P. Russo

In this work, we provide a complete characterization of the boundedness of two classes of multiparameter Forelli-Rudin type operators from one mixed-norm Lebesgue space $L^{\vec p}$ to another space $L^{\vec q}$, when $1\leq \vec{p}\leq…

复变函数 · 数学 2024-02-09 Long Huang , Xiaofeng Wang , Zhicheng Zeng

An estimate for the norm of selfadjoint Toeplitz operators with a radial, bounded and integrable symbol is obtained. This emphasizes the fact that the norm of such operator is strictly less than the supremum norm of the symbol. Consequences…

泛函分析 · 数学 2021-02-04 Antonio Galbis

In this paper we will give necessary and sufficient conditions for the operator $T_\nu^s$ to be in the symmetrically normed ideal $\mathcal{C}_\Phi$ for an arbitrary symmetric norming function $\Phi$ where $T_\nu$ is the Toeplitz operator…

泛函分析 · 数学 2014-12-01 Adam Orenstein

We study the intertwining relations between analytic Toeplitz operators induced on the Hardy space H^2 by analytic functions bounded on the open unit disc. Our work centers on the connection between intertwining between the Toeplitz…

泛函分析 · 数学 2009-03-31 Paul S. Bourdon , Joel H. Shapiro

Truncated Toeplitz operators are compressions of Toeplitz operators on model spaces; they have received much attention in the last years. This survey article presents several recent results, which relate boundedness, compactness, and…

泛函分析 · 数学 2016-01-08 Isabelle Chalendar , Emmanuel Fricain , Dan Timotin

In this paper we consider a class of unbounded Toeplitz operators with rational matrix symbols that have poles on the unit circle and employ state space realization techniques from linear systems theory, as used in our earlier analysis in…

泛函分析 · 数学 2024-10-01 G. J. Groenewald , S. ter Horst , J. Jaftha , A. C. M. Ran

We obtain a Szeg\"o limit theorem for a family of Toeplitz operators defined on the weighted Bergman space of the unit ball $\mathbb{B}_{n}$. The symbols of these operators are supported on some isotropic or co-isotropic submanifold $\Gamma…

复变函数 · 数学 2025-06-04 Daniel Ivan Ramirez Montaño

Motivated by the recent developments of de Branges-Rovnyak spaces, we investigate the function theoretic aspects of finite rank de Branges-Rovnyak spaces $H(B)$ generated by row-valued Schur functions $B$. We provide a generalization of…

泛函分析 · 数学 2026-05-19 Soumitra Ghara , MD Ramiz Reza , Chaman Kumar Sahu

We introduce new tools for analytic microlocal analysis on K\"ahler manifolds. As an application, we prove that the space of Berezin-Toeplitz operators with analytic contravariant symbol is an algebra. We also give a short proof of the…

复变函数 · 数学 2019-12-17 Laurent Charles

In this paper, we discuss the boundary behavior of bounded pluriharmonic functions on the Teichm\"uller space. We will show a version of the Fatou theorem that every bounded pluriharmonic function admits the radial limits along the…

复变函数 · 数学 2024-09-17 Hideki Miyachi

We show that a semibounded Toeplitz quadratic form is closable in the space $\ell^2({\Bbb Z}_{+})$ if and only if its matrix elemens are Fourier coefficients of an absolutely continuous measure. We also describe the domain of the…

泛函分析 · 数学 2016-05-25 D. R. Yafaev

Construction of analytic functions, which determine bounded Toeplitz operators

复变函数 · 数学 2009-07-01 Peyo Stoilov

We study Toeplitz operators with separately radial and radial symbols on the weighted Bergman spaces on the unit ball. The unitary equivalence of such operators with multiplication operators on $\ell^2$ spaces was previously obtained by…

泛函分析 · 数学 2016-01-27 Raul Quiroga-Barranco

Using tools from quantum harmonic analysis, we show that the domain of the Laplacian of an operator is dense in the Toeplitz algebra over the Fock space $\mathcal{F}^2(\mathbb{C}^n)$. As an application, we provide a simplified treatment of…

泛函分析 · 数学 2024-10-02 Vishwa Dewage , Mishko Mitkovski

Let $m \geq 1$ be an integer and let $H_m(\mathbb B)$ be the analytic functional Hilbert space on the unit ball $\mathbb B \subset \mathbb C^n$ given by the reproducing kernel $K_m(z,w) = (1 - \langle z,w \rangle)^{-m}$. We prove that…

泛函分析 · 数学 2017-10-31 Jörg Eschmeier , Sebastian Langendörfer