Results 11 to 20 of about 329,801 (266)

Weighted composition operators from weighted hardy spaces to weighted-type spaces [PDF]

open access: yesDemonstratio Mathematica, 2013
Abstract The boundedness and compactness of the weighted composition operator from weighted Hardy spaces to weighted-type spaces are studied in this paper.
openaire   +2 more sources

A stop over Jain operators and their generalizations

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
On the last five decades the interest of the study of positive approximation processes have emerged with growing evidence. A special place is occupied by the in-depth study of classical operators.
Agratini Octavian
doaj   +1 more source

Weighted Sobolev Spaces on Curves

open access: yesJournal of Approximation Theory, 2002
In this paper we present a definition of weighted Sobolev spaces on curves and find general conditions under which the spaces are complete for non-closed compact curves. We also prove the density of the polynomials in these spaces and, finally, we find conditions under which the multiplication operator is bounded in the space of polynomials.
Venancio Alvarez   +3 more
openaire   +3 more sources

Boundedness of One Class of Integral Operators from Second Order Weighted Sobolev Space to Weighted Lebesgue Space

open access: yesJournal of Function Spaces, 2022
In the paper, for a certain class of Hardy operators with kernels, we consider the problem of their boundedness from a second order weighted Sobolev space to a weighted Lebesgue space.
Aigerim Kalybay
doaj   +1 more source

Differential Transforms in Weighted Spaces

open access: yesJournal of Fourier Analysis and Applications, 2006
The authors extend the results by \textit{R. L. Jones} and \textit{J. Rosenblatt} [Math. Ann. 323, No. 3, 525--546 (2002; Zbl 1005.28012)] about the series of the differences of differential operators along lacunary sequences to BMO and to the setting of \(L^p(w)\) (the weighted \(L^p\)-spaces). Let \(\rho >1\) and let \(\{\varepsilon _k:k\in \mathbb{Z}
Bernardis-Medici, Ana Lucía   +5 more
openaire   +5 more sources

On the trace space of a Sobolev space with a radial weight [PDF]

open access: yesJournal of Function Spaces, 2008
Our concern in this paper lies with trace spaces for weighted Sobolev spaces, when the weight is a power of the distance to a point at the boundary. For a large range of powers we give a full description of the trace space.
Abels, H.   +2 more
openaire   +3 more sources

Weighted Sobolev spaces on metric measure spaces [PDF]

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 2016
Abstract We investigate weighted Sobolev spaces on metric measure spaces ( X , d ...
Ambrosio, Luigi   +2 more
openaire   +5 more sources

Composition Operators From Harmonic Lipschitz Space Into Weighted Harmonic Zygmund Space

open access: yesInternational Journal of Analysis and Applications, 2023
The paper investigate a necessary and sufficient condition for the composition operator from harmonic Lipschitz spaces LipHα ...
M. A. Bakhit   +5 more
doaj   +1 more source

Weighted Composition Operators from Generalized Weighted Bergman Spaces to Weighted-Type Spaces [PDF]

open access: yesJournal of Inequalities and Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

Bases of exponents with a piecewise linear phase in generalized weighted Lebesgue space

open access: yesJournal of Inequalities and Applications, 2016
The perturbed system of exponents with a piecewise linear phase, consisting of eigenfunctions of a discontinuous differential operator, is considered in this work.
Tofig Najafov   +2 more
doaj   +1 more source

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