Results 51 to 60 of about 5,040,927 (317)

On a class of fractional differential equations in a Sobolev space

open access: yes, 2012
This article is concerned with the study of the existence and uniqueness of solutions to a class of fractional differential equations in a Sobolev space. The fractional time derivative is considered in Riemann–Liouville sense.
G. Mophou, G. N’Guérékata
semanticscholar   +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

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

On three-dimensional Hall-magnetohydrodynamic equations with partial dissipation

open access: yesBoundary Value Problems, 2022
In this paper, we address the Hall-MHD equations with partial dissipation. Applying some important inequalities (such as the logarithmic Sobolev inequality using BMO space, bilinear estimates in BMO space, Young’s inequality, cancellation property ...
Baoying Du
doaj   +1 more source

Sobolev spaces on hypergroups Gelfand pairs [PDF]

open access: yesarXiv, 2023
This paper introduces Sobolev spaces over Gelfand pairs in the framework of hypergroups. The Sobolev spaces in question are constructed from the Fourier transform on hypergroup Gelfand pairs. Mainly, the paper focuses on the investigation of Sobolev embedding results.
arxiv  

Cauchy problem of nonlinear Schrödinger equation with initial data in Sobolev space $W^{s,p}$ for $p<2$

open access: yes, 2010
In this paper, we consider in R n the Cauchy problem for the nonlinear Schrodinger equation with initial data in the Sobolev space W s,p for p n(1 ― 1/p). Moreover, we show that in one space dimension, the problem is locally well posed in L P for any 1 <
Yi Zhou
semanticscholar   +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   +2 more sources

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

Reproducing Kernels of Generalized Sobolev Spaces via a Green Function Approach with Distributional Operators

open access: yes, 2013
In this paper we introduce a generalized Sobolev space by defining a semi-inner product formulated in terms of a vector distributional operator $\mathbf{P}$ consisting of finitely or countably many distributional operators $P_n$, which are defined on the
A. Berlinet   +19 more
core   +1 more source

INVERSE SPECTRAL PROBLEMS FOR STURM–LIOUVILLE OPERATORS WITH SINGULAR POTENTIALS. IV. POTENTIALS IN THE SOBOLEV SPACE SCALE [PDF]

open access: yesProceedings of the Edinburgh Mathematical Society, 2004
We solve the inverse spectral problems for the class of Sturm–Liouville operators with singular real-valued potentials from the Sobolev space $W^{s-1}_2(0,1)$, $s\in[0,1]$.
R. Hryniv, Y. Mykytyuk
semanticscholar   +1 more source

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