Results 21 to 30 of about 528,042 (304)

Nonlocal Symmetries and Generation of Solutions for Partial Differential Equations [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2007
Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Tychynin, V.   +2 more
openaire   +5 more sources

Distributed optimal control of a nonstandard nonlocal phase field system [PDF]

open access: yes, 2016
We investigate a distributed optimal control problem for a nonlocal phase field model of viscous Cahn-Hilliard type. The model constitutes a nonlocal version of a model for two-species phase segregation on an atomic lattice under the presence of ...
Colli, Pierluigi   +2 more
core   +4 more sources

Boundary Controllability of Differential Equations with Nonlocal Condition

open access: yesJournal of Mathematical Analysis and Applications, 1999
Global exact boundary controllability in a given time-interval of a semilinear abstract dynamical system is considered. It is generally assumed that the dynamical system is defined in an infinite-dimensional Banach space, that it contains both a linear and a nonlinear part, and that, moreover, it satisfies the so-called nonlocal conditions.
Hyo-Keun Han, Jong Yeoul Park
openaire   +2 more sources

On the Nonlinear Impulsive $\Psi$--Hilfer Fractional Differential Equations [PDF]

open access: yes, 2019
In this paper, we consider the nonlinear $\Psi$-Hilfer impulsive fractional differential equation. Our main objective is to derive the formula for the solution and examine the existence and uniqueness of results.
Kharade, Jyoti P.   +2 more
core   +4 more sources

Free vibrations of nonlocally elastic rods [PDF]

open access: yes, 2019
Several of the Eringen’s nonlocal stress models, including two-phase and purely nonlocal integral models, along with the simplified differential model, are studied in case of free longitudinal vibrations of a nanorod, for various types of boundary ...
Avdeichik, E   +2 more
core   +2 more sources

A new nonlocal nonlinear diffusion equation for image denoising and data analysis [PDF]

open access: yes, 2017
In this paper we introduce and study a new feature-preserving nonlinear anisotropic diffusion for denoising signals. The proposed partial differential equation is based on a novel diffusivity coefficient that uses a nonlocal automatically detected ...
Aletti, Giacomo   +2 more
core   +2 more sources

Impulsive functional‐differential equations with nonlocalconditions [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
The existence, uniqueness, and continuous dependence of a mild solution of an impulsive functional‐differential evolution nonlocal Cauchy problem in general Banach spaces are studied. Methods of fixed point theorems, of a C0 semigroup of operators and the Banach contraction theorem are applied.
Valéry Covachev   +2 more
openaire   +4 more sources

Existence and multiplicity of positive solutions for a nonlocal differential equation

open access: yes, 2011
In this paper, the existence and multiplicity results of positive solutions for a nonlocal differential equation are mainly considered.
Yunhai Wang, Fanglei Wang, Yukun An
semanticscholar   +1 more source

On a Perturbed Dirichlet Problem for a Nonlocal Differential Equation of Kirchhoff Type

open access: yes, 2011
We study the existence of positive solutions to the following nonlocal boundary value problem in , on , where , is a Carathéodory function, is a positive continuous function, and is a real parameter. Direct variational methods are used.
G. Anello
semanticscholar   +1 more source

CAPUTO FRACTIONAL INTEGRO-DIFFERENTIAL EQUATION WITH NONLOCAL CONDITIONS IN BANACH SPACE

open access: yesInternational Journal of Apllied Mathematics, 2019
The aim of the present paper is to prove the existence of solutions of the initial value problem for a nonlinear integro-differential equation of fractional order α ∈ (0, 1) with nonlocal conditions in Banach spaces.
Mohammed S Abdo   +2 more
semanticscholar   +1 more source

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