Results 11 to 20 of about 431,197 (172)

Fractional variational problems with the Riesz-Caputo derivative [PDF]

open access: yes, 2012
In this paper we investigate optimality conditions for fractional variational problems, with a Lagrangian depending on the Riesz-Caputo derivative. First we prove a generalized Euler-Lagrange equation for the case when the interval of integration of the ...
Almeida, R.   +2 more
core   +1 more source

Riesz potentials of functions in L^{p} [PDF]

open access: yes, 2006
Bu tez beş bölümden oluşmaktad¬ Birinci bölümde çal¬ mam¬ için gereklis s r. şs zolan tan¬ ve temel teoremler, ikinci bölümde Fourier Dönüşümleri, Rieszm sPotansiyeli, Fourier Dönüşümü ile Riesz Potansiyeli aras¬s ndaki ilişkiler ve Rieszsgrup ...
Dal, İlyas
core   +1 more source

A trace inequality for generalized potentials in Lebesgue spaces with variable exponent

open access: yesJournal of Function Spaces and Applications, 2004
A trace inequality for the generalized Riesz potentials Iα(x) is established in spaces Lp(x) defined on spaces of homogeneous type. The results are new even in the case of Euclidean spaces.
David E. Edmunds   +2 more
doaj   +1 more source

An improvement to the John-Nirenberg inequality for functions in critical Sobolev spaces

open access: yesAdvances in Nonlinear Analysis, 2020
It is known that functions in a Sobolev space with critical exponent embed into the space of functions of bounded mean oscillation, and therefore satisfy the John-Nirenberg inequality and a corresponding exponential integrability estimate.
Martínez Ángel D., Spector Daniel
doaj   +1 more source

Weighted Morrey Spaces Related to Certain Nonnegative Potentials and Riesz Transforms

open access: yesJournal of Function Spaces, 2019
Let L=-Δ+V be a Schrödinger operator, where Δ is the Laplacian on Rd and the nonnegative potential V belongs to the reverse Hölder class RHq for q≥d. The Riesz transform associated with the operator L=-Δ+V is denoted by R=∇(-Δ+V)-1/2 and the dual Riesz ...
Hua Wang
doaj   +1 more source

Optical Solitons and Vortices in Fractional Media: A Mini-Review of Recent Results

open access: yesPhotonics, 2021
The article produces a brief review of some recent results which predict stable propagation of solitons and solitary vortices in models based on the nonlinear Schrödinger equation (NLSE) including fractional one-dimensional or two-dimensional diffraction
Boris A. Malomed
doaj   +1 more source

The role of Riesz potentials in the weak-strong uniqueness for Euler-Poisson systems [PDF]

open access: yes, 2023
In this article, the weak-strong uniqueness principle is proved for an Euler-Poisson system in the whole space, with initial data so that the strong solution exists.
Alves, Nuno J.
core   +1 more source

Globally Existing Solutions to the Problem of Dirichlet for the Fractional 3D Poisson Equation

open access: yesFractal and Fractional, 2023
A general approach to solving the Dirichlet problem, both for bounded 3D domains and for their unbounded complements, in terms of the fractional (3D) Poisson equation, is presented.
Toshko Boev, Georgi Georgiev
doaj   +1 more source

Sobolev embeddings for Riesz potentials of functions in grand Morrey spaces of variable exponents over non-doubling measure spaces [PDF]

open access: yes, 2014
summary:Our aim in this paper is to deal with the boundedness of the Hardy-Littlewood maximal operator on grand Morrey spaces of variable exponents over non-doubling measure spaces.
Ohno, Takao, Shimomura, Tetsu
core   +2 more sources

On the (p,q)-Boundedness of Nonisotropic Spherical Riesz Potentials

open access: yesJournal of Inequalities and Applications, 2007
We introduced the concept of nonisotropic spherical Riesz potential operators generated by the λ-distance of variable order on λ-sphere and its (p,q)-boundedness were investigated.
Mehmet Zeki Sarikaya   +1 more
doaj   +1 more source

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