Results 31 to 40 of about 4,722,250 (284)

$L^p$-Taylor approximations characterize the Sobolev space $W^{1,p}$ [PDF]

open access: yes, 2015
In this note, we introduce a variant of Calder\'on and Zygmund's notion of $L^p$-differentiability - an \emph{$L^p$-Taylor approximation}. Our first result is that functions in the Sobolev space $W^{1,p}(\mathbb{R}^N)$ possess a first order $L^p$-Taylor ...
Spector, Daniel E.
core   +3 more sources

On a new fractional Sobolev space and applications to nonlocal variational problems with variable exponent

open access: yes, 2017
The content of this paper is at the interplay between function spaces $L^{p(x)}$ and $W^{k, p(x)}$ with variable exponents and fractional Sobolev spaces $W^{s, p}$.
Anouar Bahrouni, Vicentiu D. Rădulescu
semanticscholar   +1 more source

On the intersection of Sobolev spaces [PDF]

open access: yesColloquium Mathematicum, 1990
Assume \(1\leq p< \infty\), \(r\) and \(R\) are non-negative integers, \(r< R\), and \(\Omega\) is a bounded domain in \(\mathbb{R}^ n\). Let \(W^{p,r}\) be the Sobolev space of functions \(f\) in \(L^ p(\Omega)\) with distributional derivatives up to order \(r\) in \(L^ p(\Omega)\).
A. Benedek, R. Panzone
openaire   +3 more sources

Sobolev capacity on the space W1, p(⋅)(ℝn)

open access: yesJournal of Function Spaces and Applications, 2003
We define Sobolev capacity on the generalized Sobolev space W1, p(⋅)(ℝn). It is a Choquet capacity provided that the variable exponent p:ℝn→[1,∞) is bounded away from 1 and ∞.
Petteri Harjulehto   +3 more
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

Logarithmic Sobolev Inequality and Exponential Convergence of a Markovian Semigroup in the Zygmund Space

open access: yesEntropy, 2018
We investigate the exponential convergence of a Markovian semigroup in the Zygmund space under the assumption of logarithmic Sobolev inequality. We show that the convergence rate is greater than the logarithmic Sobolev constant.
Ichiro Shigekawa
doaj   +1 more source

New reproducing kernel functions in the reproducing kernel Sobolev spaces

open access: yesAIMS Mathematics, 2020
In this paper we construct some new reproducing kernel functions in the reproducing kernel Sobolev space. These functions are new in the literature. We can solve many problems by these functions in the reproducing kernel Sobolev spaces.
Ali Akgül   +2 more
doaj   +1 more source

Concerning the pathological set in the context of probabilistic well-posedness

open access: yesComptes Rendus. Mathématique, 2021
We prove a complementary result to the probabilistic well-posedness for the nonlinear wave equation. More precisely, we show that there is a dense set $S$ of the Sobolev space of super-critical regularity such that (in sharp contrast with the ...
Sun, Chenmin, Tzvetkov, Nikolay
doaj   +1 more source

Traces of multipliers in pairs of weighted Sobolev spaces

open access: yesJournal of Function Spaces and Applications, 2005
We prove that the pointwise multipliers acting in a pair of fractional Sobolev spaces form the space of boundary traces of multipliers in a pair of weighted Sobolev space of functions in a domain.
Vladimir Maz'ya, Tatyana Shaposhnikova
doaj   +1 more source

Long‐time asymptotics for solutions of the NLS equation with initial data in a weighted Sobolev space [PDF]

open access: yes, 2002
The authors compute the long-time asymptotics for solutions of the NLS equation just under the assumption that the initial data lies in a weighted Sobolev space. In earlier work (see e.g.
P. Deift, Xin Zhou
semanticscholar   +1 more source

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