Results 11 to 20 of about 6,536,345 (211)

Superposition operator problems of Hölder-Lipschitz spaces

Demonstratio Mathematica
Let ff be a function defined on the real line, and Tf{T}_{f} be the corresponding superposition operator which maps hh to Tf(h){T}_{f}\left(h), i.e., Tf(h)=f∘h{T}_{f}\left(h)=f\circ h. In this article, the sufficient and necessary conditions such that Tf{
Niu Yeli, Wang Heping
doaj   +2 more sources

A trace formula for functions of contractions and analytic operator Lipschitz functions [PDF]

Comptes Rendus. Mathématique, 2017
In this note, we study the problem of evaluating the trace of f ( T ) − f ( R )
Malamud M., Peller V., Neidhardt H.
core   +5 more sources

On the convergence of the hp-BEM with quasi-uniform meshes for the electric field integral equation on polyhedral surfaces [PDF]

, 2008
In this paper the hp-version of the boundary element method is applied to the electric field integral equation on a piecewise plane (open or closed) Lipschitz surface. The underlying meshes are supposed to be quasi-uniform.
Bespalov, A, Heuer, N
core   +4 more sources

Operator Lipschitz functions [PDF]

Russian Mathematical Surveys, 2016
109 pages, in ...
Aleksandrov, Aleksei, Peller, Vladimir
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Commutators with Lipschitz Functions and Nonintegral Operators [PDF]

Journal of Applied Mathematics, 2013
LetTbe a singular nonintegral operator; that is, it does not have an integral representation by a kernel with size estimates, even rough. In this paper, we consider the boundedness of commutators withTand Lipschitz functions. Applications include spectral multipliers of self-adjoint, positive operators, Riesz transforms of second-order divergence form ...
Peizhu Xie, Ruming Gong
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Dissipative operators and operator Lipschitz functions [PDF]

Proceedings of the American Mathematical Society, 2019
The purpose of this paper is to obtain an integral representation for the difference f ( L 1
Aleksandrov A.B., Peller V.V., Garcia S.R.   +2 more
openaire   +3 more sources

A New Kantorovich-Type Rational Operator and Inequalities for Its Approximation

Mathematics, 2022
We introduce a new Kantorovich-type rational operator. We investigate inequalities estimating its rates of convergence in view of the modulus of continuity and the Lipschitz-type functions.
Esma Yıldız Özkan
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Weighted Estimates for Commutator of Rough p-Adic Fractional Hardy Operator on Weighted p-Adic Herz–Morrey Spaces

Journal of Mathematics, 2021
The current article investigates the boundedness criteria for the commutator of rough p-adic fractional Hardy operator on weighted p-adic Lebesgue and Herz-type spaces with the symbol function from weighted p-adic bounded mean oscillations and weighted p-
Naqash Sarfraz, Doaa Filali, Amjad Hussain, Fahd Jarad   +3 more
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Extension of Lipschitz-type operators on Banach function spaces [PDF]

Topological Methods in Nonlinear Analysis, 2021
We study extension theorems for Lipschitz-type operators acting on metric spaces and with values on spaces of integrable functions. Pointwise domination is not a natural feature of such spaces, and so almost everywhere inequalities and other measure-theoretic notions are introduced.%more appropriate. Thus, we adapt the classical definition of Lipschitz
Wasthenny V. Cavalcante, Pilar Rueda, Enrique A. Sánchez-Pérez   +2 more
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Estimates for Commutators of Bilinear Fractional p-Adic Hardy Operator on Herz-Type Spaces

Journal of Function Spaces, 2021
In the current article, we investigate the boundedness of commutators of the bilinear fractional p-adic Hardy operator on p-adic Herz spaces and p-adic Morrey-Herz spaces by considering the symbol function from central bounded mean oscillations and ...
Amjad Hussain, Naqash Sarfraz, Ilyas Khan, Aisha M. Alqahtani   +3 more
doaj   +1 more source