Results 21 to 30 of about 27,468 (197)

Radial nonlinear elliptic problems with singular or vanishing potentials [PDF]

open access: yes, 2017
In this paper we prove existence of radial solutions for the nonlinear elliptic problem \[ -\mathrm{div}(A(|x|)\nabla u)+V(|x|)u=K(|x|)f(u) \quad \text{in }\mathbb{R}^{N}, \] \noindent with suitable hypotheses on the radial potentials $A,V,K$.
Badiale, Marino, Zaccagni, Federica
core   +2 more sources

Convolution Algebraic Structures Defined by Hardy-Type Operators

open access: yesJournal of Function Spaces and Applications, 2013
The main aim of this paper is to show that certain Banach spaces, defined via integral kernel operators, are Banach modules (with respect to some known Banach algebras and convolution products on ℝ+).
Pedro J. Miana   +2 more
doaj   +1 more source

Weighted Norm Estimates for Sobolev Spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1987
We give sufficient conditions for estimates of the form\[∫|u(x)|qdμ(x)⩽C‖u‖s,p1,u∈Hs,p,{\int {\left | {u(x)} \right |} ^q}d\mu (x) \leqslant C\left \| u \right \|_{s,p}^1,\qquad u \in {H^{s,p}},\]to hold, whereμ(x)\mu (x)is a measure and‖u‖s,p{\left \| u \right \|_{s,p}}is the norm of the Sobolev spaceHs,p{H^{s,p}}.
openaire   +2 more sources

Generalized weighted Sobolev spaces and applications to Sobolev orthogonal polynomials, II [PDF]

open access: yes, 2002
32 pages, no figures.-- MSC1987 codes: 41A10, 46E35, 46G10.-- Part I of this paper published in: Acta Appl. Math. 80(3): 273-308 (2004), available at: http://e-archivo.uc3m.es/handle/10016/6482MR#: MR1928169 (2003h:42034)Zbl#: Zbl 1095.42014^aWe present ...
Pestana, Domingo   +3 more
core   +2 more sources

Sobolev–Hardy space with general weight

open access: yesJournal of Mathematical Analysis and Applications, 2006
In this paper, the authors prove the following \(k\)th order Hardy inequality with general weight. Let \(\Omega\) be a bounded domain. Then, under the assumptions \((H_1)\) and \((H_2)\), for each positive integer \(k\) the inequality \[ \int_{\Omega}\phi|\nabla u|^2\,dx-\int_{\Omega}\phi\sum_{i=1}^{k}\left(\frac{h_i'}{h_i}\right)^2u^2\,dx\geq\int_ ...
Shen, Yaotian, Chen, Zhihui
openaire   +1 more source

Carleson measures for weighted Hardy-sobolev spaces [PDF]

open access: yesNagoya Mathematical Journal, 2007
AbstractWe obtain characterizations of positive Borel measures µ on Bn so that some weighted Hardy-Sobolev are imbedded in Lp(dµ), where w is an Ap weight in the unit sphere of Cn.
Cascante, Carme, Ortega, Joaquin M.
openaire   +4 more sources

Stability of a weighted L2 projection in a weighted Sobolev norm

open access: yesComptes Rendus. Mathématique, 2023
We prove the stability of a weighted $L^2$ projection operator onto piecewise linear finite elements spaces in a weighted Sobolev norm. Namely, we consider the orthogonal projections $\pi _{N,\omega }$ from $L^2(\mathbb{D},1/\omega (x)\mathrm{d}x)$ to ...
Averseng, Martin
doaj   +1 more source

Existence of functions in weighted sobolev spaces [PDF]

open access: yesNagoya Mathematical Journal, 2001
The aim of this paper is to determine when there exists a quasicontinuous Sobolev function whose trace is the characteristic function of a bounded set where with As application we discuss the existence of harmonic measures for weighted p-Laplacians in the unit ball.
Futamura, Toshihide, Mizuta, Yoshihiro
openaire   +3 more sources

Trace theorems for Sobolev-Slobodeckij spaces with or without weights

open access: yesJournal of Function Spaces and Applications, 2007
We prove that the well-known trace theorem for weighted Sobolev spaces holds true under minimal regularity assumptions on the domain. Using this result, we prove the existence of a bounded linear right inverse of the trace operator for Sobolev ...
Doyoon Kim
doaj   +1 more source

Sobolev spaces with non-Muckenhoupt weights, fractional elliptic operators, and applications [PDF]

open access: yes, 2018
We propose a new variational model in weighted Sobolev spaces with non-standard weights and applications to image processing. We show that these weights are, in general, not of Muckenhoupt type and therefore the classical analysis tools may not apply ...
Antil, Harbir, Rautenberg, Carlos N.
core   +3 more sources

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