Results 21 to 30 of about 5,890,937 (282)

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

Linear combinations of composition operators on H ∞ $H^{\infty }$ spaces over the unit ball and polydisk

open access: yesJournal of Inequalities and Applications, 2021
In this paper, we characterize completely the compactness of linear combinations of composition operators acting on the space H ∞ ( B N ) $H^{\infty }(\mathbb{B}_{N})$ of bounded holomorphic functions over the unit ball B N $\mathbb{B}_{N}$ from two ...
Xingxing Yao
doaj   +1 more source

Linear dynamics of multiplication and composition operators on Hol(D)

open access: yes
We give a complete description of the linear dynamics of multiplication Mm and composition operators Cφ on the space Hol(D) of all holomorphic maps on the unit disc. We show that Mm is never supercyclic, and cyclic if and only if the map m is injective.
Oger, Lucas
openaire   +2 more sources

On component-wise dissimilarity measures and metric properties in pattern recognition [PDF]

open access: yesPeerJ Computer Science, 2022
In many real-world applications concerning pattern recognition techniques, it is of utmost importance the automatic learning of the most appropriate dissimilarity measure to be used in object comparison.
Enrico De Santis   +2 more
doaj   +2 more sources

Analytic Automorphisms and Transitivity of Analytic Mappings

open access: yesMathematics, 2020
In this paper, we investigate analytic automorphisms of complex topological vector spaces and their applications to linear and nonlinear transitive operators.
Zoriana Novosad, Andriy Zagorodnyuk
doaj   +1 more source

Linear relations in the Calkin algebra for composition operators [PDF]

open access: yesTransactions of the American Mathematical Society, 2007
We consider this and related questions: When is a finite linear combination of composition operators, acting on the Hardy space or the standard weighted Bergman spaces on the unit disk, a compact operator?
Kriete, Thomas, Moorhouse, Jennifer
openaire   +3 more sources

Unbounded B-Fredholm operators on Hilbert spaces [PDF]

open access: yes, 2008
This paper is concerned with the study of a class of closed linear operators densely defined on a Hilbert space H and called B-Fredholm operators.
Berkani, M.   +3 more
core   +1 more source

Norm and Numerical Radius Inequalities for a Product of Two Linear Operators in Hilbert Spaces [PDF]

open access: yes, 2006
The main aim of the present paper is to establish some norm and numerical radius inequalities for the composite operator BA under suitable assumptions for the transform Cα ,β (T) := (T∗ −α I)(β I−T) , where α ,β ∈ C and T ∈ B(H), of the operators ...
S. S. Dragomir   +2 more
core   +3 more sources

New Inequalities of the Kantorovich Type for Bounded Linear Operators in Hilbert Spaces [PDF]

open access: yes, 2006
Some new inequalities of the Kantorovich type are established. They hold for larger classes of operators and subsets of complex numbers than considered before in the literature and provide refinements of the classical results in the case when the ...
Dragomir, Sever S
core   +3 more sources

A composition theorem for multiple summing operators [PDF]

open access: yes, 2005
We prove that the composition S(u(1),..., u(n)) of a multilinear multiple 2-summing operator S with 2-summing linear operators u(j) is nuclear, generalizing a linear result of Grothendieck.DGICYTDepto. de Análisis Matemático y Matemática AplicadaFac.
Pérez García, David   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy