Results 31 to 40 of about 25,259 (306)

Norm of Hilbert Operator’s Commutants

Axioms, 2023
In this study, we prove the norm separating property for the composition of Cesàro 1 and Gamma matrices with their transpose. As a result, we compute the ℓp-norms of six classes of operators that commute with the infinite Hilbert operators. Additionally, we find the norm of 3 Hilbert’s commutants on some well-known sequence spaces.
openaire   +2 more sources

A natural space of functions for the Ruelle operator theorem [PDF]

, 2007
We study a new space, $R(X)$, of real-valued continuous functions on the space $X$ of sequences of zeros and ones. We show exactly when the Ruelle operator theorem holds for such functions.
Walters, Peter
core   +1 more source

Inequalities for the fractional convolution operator on differential forms

Journal of Inequalities and Applications, 2018
The purpose of this paper is to derive some Coifman type inequalities for the fractional convolution operator applied to differential forms. The Lipschitz norm and BMO norm estimates for this integral type operator acting on differential forms are also ...
Zhimin Dai, Huacan Li, Qunfang Li
doaj   +1 more source

Tight computationally efficient approximation of matrix norms with applications

Open Journal of Mathematical Optimization, 2022
We address the problems of computing operator norms of matrices induced by given norms on the argument and the image space. It is known that aside of a fistful of “solvable cases”, most notably, the case when both given norms are Euclidean, computing ...
Juditsky, Anatoli, Kotsalis, Georgios, Nemirovski, Arkadi   +2 more
doaj   +1 more source

Uniform local amenability

, 2013
The main results of this paper show that various coarse (‘large scale’) geometric properties are closely related. In particular, we show that prop- erty A implies the operator norm localisation property, and thus that norms of operators associated to a ...
Wright, Nick, Niblo, Graham, Willett, Rufus, Brodzki, Jacek, Špakula, Ján   +4 more
core   +1 more source

On solvability of focal boundary value problems for higher order functional differential equations with integral restrictions

Electronic Journal of Qualitative Theory of Differential Equations, 2021
Sharp conditions are obtained for the unique solvability of focal boundary value problems for higher-order functional differential equations under integral restrictions on functional operators.
Eugene Bravyi
doaj   +1 more source

Vector inequalities for powers of some operators in Hilbert spaces

, 2008
Vector inequalities for powers of some operators in Hilbert spaces with applications for operator norm, numerical radius, commutators and self-commutators are ...
Dragomir, Sever S, S.S. Dragomir
core   +1 more source

Essential Norm of Generalized Integral-Type Operator from the Fractional Cauchy Transform Space into Weighted Bloch and Dirichlet Spaces

Axioms
In this paper, we investigate the generalized integral-type operator acting between the fractional Cauchy transform space and two classical analytic function spaces: the weighted Bloch space and the weighted Dirichlet space.
Mostafa Hassanlou, Ebrahim Abbasi, Maryam G. Alshehri   +2 more
doaj   +1 more source

A Probabilistic Integral Study of Quasiproduct Overa Nonadditive Measure

Journal of Harbin University of Science and Technology, 2021
In this paper, a definition of non additive measure is given, which has F-addability; the Einstein calculater is optimized, and the λ-fuzzy quasiproduct operator and λ-fuzzy quasi sum operator with adjustable parameters for practical problems are ...
ZHAO Hui, ZHANG Xiao-xue, ZHANG Shao-xin
doaj   +1 more source

Norm Reduction of Averaging Operators [PDF]

Proceedings of the American Mathematical Society, 1972
Suppose ϕ : S
Cohen, H. B., Labbe, M. A., Wolfe, J.
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