Results 41 to 50 of about 386,373 (206)

A Note on Properties of Discrete Composition Operators

open access: yes, 2017
We derive properties and a characterization of discrete composition matrices which are useful in the field of numerical computation of shape ...
Glashoff, Klaus, Ortlieb, Claus Peter
core   +1 more source

On the composition operator with variable integrability

open access: yesAIMS Mathematics
In this article, we considered a class of composition operators on Lebesgue spaces with variable exponents over metric measure spaces. Taking advantage of the compatibility between the metric-measurable structure and the regularity properties of the ...
Carlos F. Álvarez   +3 more
doaj   +1 more source

Spectral Invariance of Non-Smooth Pseudodifferential Operators

open access: yes, 2016
In this paper we discuss some spectral invariance results for non-smooth pseudodifferential operators with coefficients in H\"older spaces. In analogy to the proof in the smooth case of Beals and Ueberberg, we use the characterization of non-smooth ...
Abels, Helmut, Pfeuffer, Christine
core   +1 more source

2-Complex Symmetric Composition Operators on H2

open access: yesAxioms, 2022
In this paper, we study 2-complex symmetric composition operators with the conjugation J, defined by Jf(z)=(f(z¯))¯, on the Hardy space H2. More precisely, we obtain the necessary and sufficient condition for the composition operator Cϕ to be 2-complex ...
Lian Hu, Songxiao Li, Rong Yang
doaj   +1 more source

Distances between composition operators [PDF]

open access: yes, 2007
The norm distance between two composition operators is calculated in select ...
Matache, Valentin
core   +3 more sources

Topological Structures of Derivative Weighted Composition Operators on the Bergman Space

open access: yesJournal of Function Spaces, 2015
We characterize the difference of derivative weighted composition operators on the Bergman space in the unit disk and determine when linear-fractional derivative weighted composition operators belong to the same component of the space of derivative ...
Ce-Zhong Tong, Cheng Yuan, Ze-Hua Zhou
doaj   +1 more source

Composition Operators Belonging to Operator Ideals

open access: yesJournal of Mathematical Analysis and Applications, 1999
Let \(D\) be the unit disc \(\{z\in\mathbb{C}:|z|< 1\}\) of the complex plane \(\mathbb{C}\), and let \(\mu\) be the normalized Lebesgue measure on \(D\).
openaire   +2 more sources

Supercyclic Weighted Composition Operators on the Space of Smooth Functions

open access: yesMathematics
A weighted composition operator on the space of scalar-valued smooth functions on an open subset of a d-dimensional Euclidean space is supercyclic if and only if it is weakly mixing, and it is strongly supercyclic if and only if it is mixing.
Juan Bès, Christopher Foster
doaj   +1 more source

Composition operators on de Branges-Rovnyak spaces [PDF]

open access: yesمجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2019
We obtain invariant de Branges--Rovnyak spaces for the composition operator. We also find the images of the composition operators on the de Branges-Rovnyak spaces, for special cases of ...
Ghada Nasser   +2 more
doaj   +1 more source

Non-Weakly Supercyclic Weighted Composition Operators

open access: yesAbstract and Applied Analysis, 2010
We give sufficient conditions under which a weighted composition operator on a Hilbert space of analytic functions is not weakly supercyclic. Also, we give some necessary and sufficient conditions for hypercyclicity and supercyclicity of weighted ...
Z. Kamali   +2 more
doaj   +1 more source

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