Results 41 to 50 of about 1,651 (223)

Approximating Functions in the Power-Type Weighted Variable Exponent Sobolev Space by the Hardy Averaging Operator

open access: yes, 2022
We investigate the problem of approximating function f in the power-type weighted variable exponent Sobolev space W-alpha(.)(r,p(.)) (0, 1), (r = 1, 2,...), by the Hardy averaging operator A (f) (x) = 1/x integral(x)(0) f (t)dt. If the function f lies in
Ayazoglu, Rabil   +3 more
core   +1 more source

Parabolic weighted Sobolev-Poincaré type inequalities

open access: yes, 2022
Diening L, Lee M, Ok J. Parabolic weighted Sobolev-Poincaré type inequalities. Nonlinear Analysis : Theory, Methods & Applications . 2022;218: 112772.We derive weighted Sobolev-Poincare type inequalities in function spaces concerned with parabolic ...
Diening, Lars ; https://orcid.org/   +2 more
core   +1 more source

Elastic scattering by unbounded rough surfaces: Solvability in weighted Sobolev spaces [PDF]

open access: yes, 2013
This paper is concerned with the variational approach in weighted Sobolev spaces to time-harmonic elastic scattering by two-dimensional unbounded rough surfaces.
Elschner, Johannes, Hu, Guanghui
core   +1 more source

Final State Problem for the Dirac-Klein-Gordon Equations in Two Space Dimensions

open access: yesAbstract and Applied Analysis, 2013
We study the final state problem for the Dirac-Klein-Gordon equations (DKG) in two space dimensions. We prove that if the nonresonance mass condition is satisfied, then the wave operator for DKG is well defined from a neighborhood at the origin in lower ...
Masahiro Ikeda
doaj   +1 more source

Weighted fractional Sobolev spaces as interpolation spaces in bounded domains

open access: yes, 2022
We characterize the real interpolation space between a weighted $L^p$ space and a weighted Sobolev space in arbitrary bounded domains in $\mathbb{R}^n$, with weights that are positive powers of the distance to the ...
Acosta Rodriguez, Gabriel   +7 more
core   +1 more source

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

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

Weierstrass' Theorem in Weighted Sobolev Spaces

open access: yesJournal of Approximation Theory, 2001
It is very well known that given any compact interval \(I\), the set of all continuous (almost everywhere) functions \(C(I)\) on \(I\) is the biggest set of functions that can be approximated by polynomials in the \(L^\infty(I)\) norm. This result is the very classical Weierstrass' Theorem. There are many generalizations of this result [see e.g.
openaire   +2 more sources

Parabolic oblique derivative problem with discontinuous coefficients in generalized weighted Morrey spaces

open access: yesOpen Mathematics, 2016
We obtain the global weighted Morrey-type regularity of the solution of the regular oblique derivative problem for linear uniformly parabolic operators with VMO coefficients.
Guliyev Vagif S., Omarova Mehriban N.
doaj   +1 more source

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