Results 21 to 30 of about 408,881 (273)

Dual spaces of weighted spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1970
The topological duals of a large class of weighted spaces of continuous functions are characterized as spaces of Radon measures which can be factored into a product of a weight function and a bounded Radon measure. We next obtain a representation for a base for the equicontinuous subsets of these dual spaces and for the extremal points of the members ...
openaire   +2 more sources

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

Interpolation in Jacobi-weighted spaces and its application to a posteriori error estimations of the p-version of the finite element method [PDF]

open access: yes, 2015
The goal of this work is to introduce a local and a global interpolator in Jacobi-weighted spaces, with optimal order of approximation in the context of the $p$-version of finite element methods. Then, an a posteriori error indicator of the residual type
Armentano, María Gabriela   +1 more
core   +3 more sources

Product Type Operators Involving Radial Derivative Operator Acting between Some Analytic Function Spaces

open access: yesMathematics, 2021
Let N denote the set of all positive integers and N0=N∪{0}. For m∈N, let Bm={z∈Cm:|z|
Manisha Devi   +2 more
doaj   +1 more source

Approximation by q-analogue of modified Jakimovski-Leviatan-Stancu type operators

open access: yesDemonstratio Mathematica, 2017
In this paper, we introduce the q-analogue of the Jakimovski-Leviatan type modified operators introduced by Atakut with the help of the q-Appell polynomials.We obtain some approximation results via the well-known Korovkin’s theorem for these operators.We
Mursaleen Mohammad   +2 more
doaj   +1 more source

Weighted inequalities for fractional integral operators and linear commutators in the Morrey type spaces [PDF]

open access: yes, 2016
In this paper, we first introduce some new Morrey type spaces containing generalized Morrey space and weighted Morrey space with two weights as special cases. Then we give the weighted strong type and weak type estimates for fractional integral operators
Wang, Hua
core   +3 more sources

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

Volterra composition operators from generalized weighted weighted Bergman spaces to µ-Bloch spaces

open access: yesJournal of Function Spaces and Applications, 2009
Let φ be a holomorphic self-map and g be a fixed holomorphic function on the unit ball B. The boundedness and compactness of the operator Tg,φf(z)=∫01f(φ(tz))ℜg(tz)dtt from the generalized weighted Bergman space into the µ-Bloch space are studied in this
Xiangling Zhu
doaj   +1 more source

Anisotropic Sobolev Spaces with Weights

open access: yesTokyo Journal of Mathematics, 2023
We study Sobolev spaces with weights in the half-space $\mathbb{R}^{N+1}_+=\{(x,y): x \in \mathbb{R}^N, y>0\}$, adapted to the singular elliptic operators \begin{equation*} \mathcal L =y^{ _1} _{x} +y^{ _2}\left(D_{yy}+\frac{c}{y}D_y -\frac{b}{y^2}\right). \end{equation*}
Metafune G., Negro L., Spina C.
openaire   +3 more sources

On weighted spaces without a fundamental sequence of bounded sets

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
The problem of countably quasi-barrelledness of weighted spaces of continuous functions, of which there are no results in the general setting of weighted spaces, is tackled in this paper.
J. O. Olaleru
doaj   +1 more source

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