Results 41 to 50 of about 91,889 (335)

A remark on nonlocal Neumann conditions for the fractional Laplacian [PDF]

open access: yesArchiv der Mathematik, 2020
AbstractWe show how nonlocal boundary conditions of Robin type can be encoded in the pointwise expression of the fractional operator. Notably, the fractional Laplacian of functions satisfying homogeneous nonlocal Neumann conditions can be expressed as a regional operator with a kernel having logarithmic behaviour at the boundary.
openaire   +6 more sources

A Quasilinear Parabolic System with Nonlocal Boundary Condition [PDF]

open access: yesBoundary Value Problems, 2011
We investigate the blow-up properties of the positive solutions to a quasilinear parabolic system with nonlocal boundary condition. We first give the criteria for finite time blowup or global existence, which shows the important influence of nonlocal boundary. And then we establish the precise blow-up rate estimate.
Botao Chen   +3 more
openaire   +4 more sources

Green functions for stationary problems with nonlocal boundary conditions

open access: yesLietuvos Matematikos Rinkinys, 2008
In this paper the Green functions for various stationary problems with nonlocal boundary conditions are investigated.We compare Green functions properties for classical boundary conditions with properties of Green functions for problems with nonlocal ...
Svetlana Roman, Artūras Štikonas
doaj   +1 more source

On a Coupled System of Random and Stochastic Nonlinear Differential Equations with Coupled Nonlocal Random and Stochastic Nonlinear Integral Conditions

open access: yesMathematics, 2021
It is well known that Stochastic equations had many useful applications in describing numerous events and problems of real world, and the nonlocal integral condition is important in physics, finance and engineering.
Ahmed M. A. El-Sayed, Hoda A. Fouad
doaj   +1 more source

Solitons in Nonlinear Media with an Infinite Range of Nonlocality: First Observation of Coherent Elliptic Solitons and of Vortex-Ring Solitons [PDF]

open access: yes, 2005
We present an experimental study on wave propagation in highly nonlocal optically nonlinear media, for which far-away boundary conditions significantly affect the evolution of localized beams.
Carmon, Tal   +4 more
core   +1 more source

Effect of boundary conditions and constitutive relations on the free vibration of nonlocal beams

open access: yesResults in Physics, 2020
The free vibrations of nonlocal Euler and Timoshenko beams have been studied extensively, but there still remain some problems concerning boundary conditions and constitutive relations.
Gen Li   +3 more
doaj  

Blow-up for a parabolic system with nonlocal sources and nonlocal boundary conditions [PDF]

open access: yesBoundary Value Problems, 2015
This paper deals with blow-up properties of solutions to a nonlocal parabolic system with nonlocal boundary conditions. The global existence and finite time blow-up criteria are obtained. Moreover, for some special cases, we establish the precise blow-up rate estimates.
Lixin Tian   +3 more
openaire   +2 more sources

A nonlocal eigenvalue problem and the stability of spikes for reaction-diffusion systems with fractional reaction rates [PDF]

open access: yes, 2003
We consider a nonlocal eigenvalue problem which arises in the study of stability of spike solutions for reaction-diffusion systems with fractional reaction rates such as the Sel'kov model, the Gray-Scott system, the hypercycle Eigen and Schuster ...
Dancer E. N.   +11 more
core   +1 more source

Identification hyperbolic problems with nonlocal conditions

open access: yesAIP Conference Proceedings, 2018
In the present study, a identification problem with nonlocal conditions for a one-dimensional hyperbolic equation is investigated. Stability estimates for the solution of the identification problem are established. Furthermore, a first order of accuracy difference scheme for the numerical solution of the identification hyperbolic equations problems ...
Ashyralyev A., Emharab F.
openaire   +4 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

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