Results 1 to 10 of about 7,620,087 (354)

HYPERCYCLIC COMPOSITION OPERATORS

open access: yesJournal of Vasyl Stefanyk Precarpathian National University, 2015
In this paper we give survey of hypercyclic composition operators. In pacticular,we represent new classes of hypercyclic composition operators on the spaces of analyticfunctions.
Z.H. Mozhyrovska
doaj   +3 more sources

Antinormal Weighted Composition Operators [PDF]

open access: yesAbstract and Applied Analysis, 2016
Let l2=L2N,μ, where N is set of all positive integers and μ is the counting measure whose σ-algebra is the power set of N. In this paper, we obtain necessary and sufficient conditions for a weighted composition operator to be antinormal on the Hilbert ...
Dilip Kumar, Harish Chandra
doaj   +4 more sources

Composition operators on the polydisc [PDF]

open access: yesJournal of Functional Analysis, 2022
In this paper we study the boundedness of composition operators on the weighted Bergman spaces and the Hardy space over the polydisc D n . Study-ing the volume of sublevel sets we show for which n the necessary conditions obtained by Bayart are sufficient.
Łukasz Kosiński
semanticscholar   +1 more source

Weighted composition operators on the Bloch space of a bounded homogeneous domain [PDF]

open access: yes, 2022
In this paper, we present the current results in the study of weighted composition operators on the Bloch space of bounded homogeneous domains in $\mathbb{C}^n$ with particular emphasis on the issues of boundedness and compactness.
R. F. Allen, Flavia Colonna
semanticscholar   +1 more source

A mean counting function for Dirichlet series and compact composition operators [PDF]

open access: yesAdvances in Mathematics, 2020
We introduce a mean counting function for Dirichlet series, which plays the same role in the function theory of Hardy spaces of Dirichlet series as the Nevanlinna counting function does in the classical theory. The existence of the mean counting function
Ole Fredrik Brevig, Karl-Mikael Perfekt
semanticscholar   +1 more source

Chaos and frequent hypercyclicity for composition operators [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2020
The notions of chaos and frequent hypercyclicity enjoy an intimate relationship in linear dynamics. Indeed, after a series of partial results, it was shown by Bayart and Ruzsa in 2015 that for backward weighted shifts on $\ell _p(\mathbb {Z})$, the ...
U. Darji, B. Pires
semanticscholar   +1 more source

Compact differences of weighted composition operators [PDF]

open access: yesCollectanea Mathematica, 2020
Compact differences of two weighted composition operators acting from the weighted Bergman space Aωp\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage ...
Bin Liu, J. Rättyä
semanticscholar   +1 more source

On Composition Operators on N+(?) [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1998
Let N(?) denote the class of analytic functions fin a domain ?, contained in the complex numbers C, such that log(1+| f |) has a harmonic majorant. The subclass N+(?) of N(?) consists of all f such that log(1+| f |) has a quasi-bounded harmonic majorant.
Mahmud Masri
doaj   +1 more source

On Composition Operators on A2 [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 1995
If (?) is an analytic function mapping the open unit disk D into itself and A2 is the Bergman space of analytic functions on D, the compositon operator C?, on A2 is defined by C?f=fo?feA2.
Mahmud Ilayyan Masri
doaj   +1 more source

Normality and Quasinormality of Specific Bounded Product of Densely Defined Composition Operators in L2 Spaces

open access: yesConcrete Operators, 2022
Let (X, 𝒜, μ) be a σ−finite measure space. A transformation ϕ : X → X is non-singular if μ ∘ ϕ−1 is absolutely continuous with respect with μ. For this non-singular transformation, the composition operator Cϕ: 𝒟(Cϕ) → L2(μ) is defined by Cϕf = f ∘ ϕ, f ∈
Zhou Hang
doaj   +1 more source

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