Results 1 to 10 of about 659 (99)

On small Lebesgue spaces [PDF]

open access: yesJournal of Function Spaces and Applications, 2005
We consider a generalized version of the small Lebesgue spaces, introduced in [5] as the associate spaces of the grand Lebesgue spaces. We find a simplified expression for the norm, prove relevant properties, compute the fundamental function and discuss ...
Claudia Capone, Alberto Fiorenza
doaj   +4 more sources

Real Interpolation of Small Lebesgue Spaces in a Critical Case

open access: yesJournal of Function Spaces, 2018
We establish an interpolation formula for small Lebesgue spaces in a critical case.
Irshaad Ahmed   +2 more
doaj   +2 more sources

Embeddings between grand, small, and variable Lebesgue spaces [PDF]

open access: yesMathematical Notes, 2017
We give conditions on the exponent function $p(\cdot)$ that imply the existence of embeddings between grand, small and variable Lebesgue spaces. We construct examples to show that our results are close to optimal. Our work extends recent results by the second author, Rakotoson and Sbordone.
A Fiorenza
exaly   +4 more sources

Fully measurable small Lebesgue spaces

open access: yesJournal of Mathematical Analysis and Applications, 2017
The interval \([0,1]\) of the real line \(\mathbb R=[-\infty,\infty]\) is denoted by \(I\), the class of Lebesgue measurable functions on \(I\) is denoted by \({\mathcal M}\) and the class of essentially bounded functions on \(I\) is denoted by \(L^\infty(I)\), so that \(L^\infty(I)= \{f\in{\mathcal M}(I):\| f\|_\infty a)= 0\}\). If \(p(.)\in\mathcal{M}
Raffaella Giova   +2 more
exaly   +5 more sources

Interior Schauder-Type Estimates for Higher-Order Elliptic Operators in Grand-Sobolev Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2021
In this paper  an elliptic operator of the $m$-th order  $L$ with continuous coefficients in the $n$-dimensional domain $\Omega \subset R^{n} $ in the non-standard Grand-Sobolev space $W_{q)}^{m} \left(\Omega \right)\, $ generated by the norm $\left\| \,
Bilal Bilalov, Sabina Sadigova
doaj   +1 more source

Bilinear multipliers of small Lebesgue spaces

open access: yesTURKISH JOURNAL OF MATHEMATICS, 2021
Let $G$ be a locally compact abelian metric group with Haar measure $λ$ and $\hat{G}$ its dual with Haar measure $μ,$ and $λ( G) $ is finite.
Öznur KULAK, A.Turan GÜRKANLI
openaire   +6 more sources

Uniform estimates with data from generalized Lebesgue spaces in periodic structures

open access: yesBoundary Value Problems, 2021
We study various types of uniform Calderón–Zygmund estimates for weak solutions to elliptic equations in periodic homogenization. A global regularity is obtained with respect to the nonhomogeneous term from weighted Lebesgue spaces, Orlicz spaces, and ...
Yunsoo Jang
doaj   +1 more source

Dirichlet-Neumann problem for the partial differential equations with deviation over the space argument

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
Dirichlet-Neumann problem for the typeless high order partial differential equation with deviating over the space argument is studied in the domain, which is the Cartesian product of the segment $(0,T)$ and the unit circle $\Omega=\mathbb R/(2\pi \mathbb
P.Ya. Pukach   +3 more
doaj   +1 more source

Global gradient estimates for Dirichlet problems of elliptic operators with a BMO antisymmetric part

open access: yesAdvances in Nonlinear Analysis, 2022
Let n≥2n\ge 2 and Ω⊂Rn\Omega \subset {{\mathbb{R}}}^{n} be a bounded nontangentially accessible domain. In this article, the authors investigate (weighted) global gradient estimates for Dirichlet boundary value problems of second-order elliptic equations
Yang Sibei, Yang Dachun, Yuan Wen
doaj   +1 more source

On grand and small Lebesgue and Sobolev spaces and some applications to PDE's [PDF]

open access: yesDifferential Equations & Applications, 2018
Summary: This paper is essentially a survey on grand and small Lebesgue spaces, which are rearrangement-invariant Banach function spaces of interest not only from the point of view of function spaces theory, but also from the point of view of their applications: the corresponding Sobolev spaces are of interest, for instance, in the theory of PDEs.
Fiorenza, Alberto   +2 more
openaire   +5 more sources

Home - About - Disclaimer - Privacy