Results 51 to 60 of about 414,757 (180)

Norms of Hermite interpolation operators

open access: yesApplied Mathematics Letters, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Y. Igano   +3 more
openaire   +3 more sources

On a New Integral-Type Operator from the Weighted Bergman Space to the Bloch-Type Space on the Unit Ball

open access: yesDiscrete Dynamics in Nature and Society, 2008
We introduce an integral-type operator, denoted by Pφg, on the space of holomorphic functions on the unit ball B⊂ℂn, which is an extension of the product of composition and integral operators on the unit disk.
Stevo Stević
doaj   +1 more source

Banach-valued multilinear singular integrals

open access: yes, 2017
We develop a general framework for the analysis of operator-valued multilinear multipliers acting on Banach-valued functions. Our main result is a Coifman-Meyer type theorem for operator-valued multilinear multipliers acting on suitable tuples of UMD ...
Di Plinio, Francesco, Ou, Yumeng
core   +1 more source

An embedding norm and the Lindqvist trigonometric functions

open access: yesElectronic Journal of Differential Equations, 2002
We shall calculate the operator norm $|T|_p$ of the Hardy operator $Tf = int_0^x f $, where $1le ple infty$. This operator is related to the Sobolev embedding operator from $W^{1,p}(0,1)/mathbb{C}$ into $W^p(0,1)/mathbb{C}$.
Christer Bennewitz, Yoshimi Saito
doaj  

Can you compute the operator norm?

open access: yes, 2013
In this note we address various algorithmic problems that arise in the computation of the operator norm in unitary representations of a group on Hilbert space.
Fritz, Tobias   +2 more
core   +1 more source

Norm Comparison Inequalities for the Composite Operator

open access: yesJournal of Inequalities and Applications, 2009
We establish norm comparison inequalities with the Lipschitz norm and the BMO norm for the composition of the homotopy operator and the projection operator applied to differential forms satisfying the A-harmonic equation.
Ding Shusen, Xing Yuming
doaj  

Fuzzy Operator Ideals

open access: yesJournal of Applied Science and Engineering, 2022
Although the systematic emergence of the fuzzy functional analysis theory has started in the last few years, we are starting to construct a new theory of fuzzy operator ideals inspired by the classical (crisp) operator ideals theory.
Laith K. Shaakir   +2 more
doaj   +1 more source

Poincaré Inequalities for Composition Operators with Lφ-Norm

open access: yesAbstract and Applied Analysis, 2014
We establish the Poincaré-type inequalities for the composition of the homotopy operator, exterior derivative operator, and the projection operator with Lφ-norm applied to the nonhomogeneous A-harmonic equation in Lφ(Ω)-averaging domains.
Ru Fang
doaj   +1 more source

New versions of refinements and reverses of Young-type inequalities with the Kantorovich constant

open access: yesSpecial Matrices, 2023
Recently, some Young-type inequalities have been promoted. The purpose of this article is to give further refinements and reverses to them with Kantorovich constants.
Rashid Mohammad H. M., Bani-Ahmad Feras
doaj   +1 more source

Orthonormal Systems in Linear Spans

open access: yes, 2012
We show that any $N$-dimensional linear subspace of $L^2(\mathbb{T})$ admits an orthonormal system such that the $L^2$ norm of the square variation operator $V^2$ is as small as possible. When applied to the span of the trigonometric system, we obtain an
Chevet, Garsia, Marcus, Milman
core   +1 more source

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