Results 41 to 50 of about 12,601 (303)

Composition Operators From Harmonic Lipschitz Space Into Weighted Harmonic Zygmund Space

open access: yesInternational Journal of Analysis and Applications, 2023
The paper investigate a necessary and sufficient condition for the composition operator from harmonic Lipschitz spaces LipHα ...
M. A. Bakhit   +5 more
doaj   +1 more source

SUMS OF WEIGHTED COMPOSITION OPERATORS ON COP [PDF]

open access: yesGlasgow Mathematical Journal, 2012
AbstractLet COP =0∩H∞, where0is the little Bloch space on the open unit disk, andA() be the disk algebra on. For non-zero functionsu1,u2,. . .,uN∈A() and distinct analytic self-maps ϕ1,ϕ2,. . .,ϕNsatisfying ϕj∈A() and ∥ϕj∥∞=1 for everyj, it is given characterisations of which the sum of weighted composition operators ∑Nj=1ujCϕjmaps COP intoA().
Izuchi, Kei Ji   +2 more
openaire   +1 more source

Hermitian Weighted Composition Operators and Bergman Extremal Functions

open access: yes, 2017
Weighted composition operators have been related to products of composition operators and their adjoints and to isometries of Hardy spaces. In this paper, Hermitian weighted composition operators on weighted Hardy spaces of the unit disk are studied.
고응일
core   +1 more source

A Review on Classes of Composition Operators

open access: yesپژوهش‌های ریاضی, 2020
Introduction In 1976, A. Lambert characterized subnormal weighted shifts. Then he studied hyponormal weighted composition operators on  in 1986 and in 1988 subnormal composition operators studied again by him. Recently, A. Lambert, et al., have published
Mohammadreza Azimi
doaj  

Weighted differentiation composition operators from the logarithmic Bloch space to the weighted-type space

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
The boundedness of the weighted differentiation composition opera- tor from the logarithmic Bloch space to the weighted-type space is characterized in terms of the sequence (zn)n∈N0.
Li Songxiao, Stević Stevo
doaj   +1 more source

Binormal and complex symmetric weighted composition operators on the Fock Space over $\mathbb{C}$

open access: yesМатематичні Студії, 2023
In this paper, we give simple characterization of binormal weighted composition operators $C_{\psi, \phi}$ on the Fock space over $\mathbb{C}$ where weight function is of the form $\psi(\zeta) = e^{\langle \zeta, c \rangle}$ for some $c \in \mathbb{C ...
C. Santhoshkumar
doaj   +1 more source

On the dynamics of weighted composition operators

open access: yesJournal of Mathematical Analysis and Applications
We study the properties of power-boundedness, Li-Yorke chaos, distributional chaos, absolutely Cesàro boundedness and mean Li-Yorke chaos for weighted composition operators on $L^p(μ)$ spaces and on $C_0(Ω)$ spaces. We illustrate the general results by presenting several applications to weighted shifts on the classical sequence spaces $c_0(\mathbb{N})$,
Nilson C. Bernardes   +2 more
openaire   +2 more sources

The composition operators on weighted Bloch space [PDF]

open access: yesArchiv der Mathematik, 2002
Let \(H(D)\) denote the set of all holomorphic functions in the open unit disk \(D\) and let \(\phi\) be a holomorphic selfmap of \(D\). Suppose that \(X\) and \(Y\) are two function spaces defined on \(D\). The map \(\phi\) is said to have the \(X\)-to-\(Y\) pullback property if \(f\circ \phi\in Y\) for every \(f\in X\).
openaire   +3 more sources

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

Operators commuting with complex symmetric weighted composition operators on H 2

open access: yesConcrete Operators
In this article, we initially study when an anti-linear Toeplitz operator is in the commutant of a composition operator. Primarily, we investigate weighted composition operators Wg,ψ{W}_{g,\psi } commuting with complex symmetric weighted composition ...
Bhuia Sudip Ranjan
doaj   +1 more source

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