Results 31 to 40 of about 4,705,780 (288)

Degree and Sobolev spaces [PDF]

open access: yesTopological Methods in Nonlinear Analysis, 1999
Let $u$ belong (for example) to $W^{1,n+1}(S^n\times \Lambda, S^n)_{\lambda\in\Lambda}$ where $\Lambda$ is a connected open set in ${\mathbb R}^k$. For a.e. the map $x\mapsto u(x,\lambda)$ is continuous from $S^n$ into $S^n$ and therefore its (Brouwer) degree is well defined. We prove that this degree is independent of $\lambda$ a.e.
Brezis, Haïm   +3 more
openaire   +3 more sources

Multiplication in Sobolev spaces, revisited [PDF]

open access: yesArkiv för Matematik, 2021
25 pages, no figures.
Michael Holst, A. Behzadan
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

Uhlenbeck’s Decomposition in Sobolev and Morrey–Sobolev Spaces [PDF]

open access: yesResults in Mathematics, 2018
We present a self-contained proof of Uhlenbeck's decomposition theorem for $ \in L^p(\mathbb{B}^n,so(m)\otimes ^1\mathbb{R}^n)$ for $p\in (1,n)$ with Sobolev type estimates in the case $p \in[n/2,n)$ and Morrey-Sobolev type estimates in the case $p\in (1,n/2)$.
Anna Zatorska-Goldstein   +1 more
openaire   +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

Improved Sobolev Inequalities and Muckenhoupt weights on stratified Lie groups [PDF]

open access: yes, 2010
We study in this article the Improved Sobolev inequalities with Muckenhoupt weights within the framework of stratified Lie groups. This family of inequalities estimate the Lq norm of a function by the geometric mean of two norms corresponding to Sobolev ...
Chamorro, Diego
core   +3 more sources

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

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

$L^p$-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

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

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