Results 11 to 20 of about 3,535 (248)

Modified Crank-Nicolson Difference Schemes for Nonlocal Boundary Value Problem for the Schrödinger Equation [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2009
The nonlocal boundary value problem for Schrödinger equation in a Hilbert space is considered. The second-order of accuracy 𝑟-modified Crank-Nicolson difference schemes for the approximate solutions of this nonlocal boundary value problem are presented ...
Allaberen Ashyralyev, Ali Sirma
doaj   +2 more sources

Nonlocal boundary value problems for the Schrödinger equation [PDF]

open access: yesComputers & Mathematics with Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Allaberen Ashyralyev, Ali Sirma
openaire   +2 more sources

Radial solutions for a nonlocal boundary value problem [PDF]

open access: yesBoundary Value Problems, 2006
We consider the boundary value problem for the nonlinear Poisson equation with a nonlocal term −Δu=f(u,∫Ug(u)), u|∂U=0. We prove the existence of a positive radial solution when f grows linearly in u, using Krasnoselskiiés fixed ...
Luís Sanchez   +1 more
doaj   +4 more sources

Positivity of Green's matrix of nonlocal boundary value problems [PDF]

open access: yesMathematica Bohemica, 2014
Summary: We propose an approach for studying the positivity of Green's operators of a nonlocal boundary value problem for the system of \(n\) linear functional differential equations with the boundary conditions \(n_{i}x_{i}-\sum \nolimits_{j=1}^{n}m_{ij}x_{j}=\beta_{i}\), \(i=1,\dots ,n\), where \(n_{i}\) and \(m_{ij}\) are linear bounded ``local ...
Domoshnitsky, Alexander
openaire   +4 more sources

Asymptotic distribution of eigenvalues and eigenfunctions of a nonlocal boundary value problem [PDF]

open access: yesMathematical Modelling and Analysis, 2021
In this work, we obtain asymptotic formulas for eigenvalues and eigenfunctions of the second order boundary-value problem with a Bitsadze–Samarskii type nonlocal boundary condition.
Erdoğan Şen, Artūras Štikonas
doaj   +3 more sources

On well-posedness of the nonlocal boundary value problem for parabolic difference equations [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2004
We consider the nonlocal boundary value problem for difference equations (uk−uk−1)/τ+Auk=φk, 1≤k≤N, Nτ=1, and u0=u[λ/τ]+φ ...
A. Ashyralyev   +2 more
doaj   +2 more sources

Nonlocal boundary value problem for second order abstract elliptic differential equation [PDF]

open access: yesAbstract and Applied Analysis, 1999
We establish conditions that guarantee Fredholm solvability in the Banach space Lp of nonlocal boundary value problems for elliptic abstract differential equations of the second order in an interval.
Mohamed Denche
doaj   +2 more sources

Nonlocal elliptic boundary value problems [PDF]

open access: yesBulletin of the American Mathematical Society, 1964
An m-point nonlocal boundary value problem is posed for quasi- linear differential equations of first order on the plane. Nonlocal boundary value problems are investigated using the algorithm of reducing nonlocal boundary value problems to a sequence of ...
David Devadze, Devadze, David
openaire   +5 more sources

Gradient method in Sobolev spaces for nonlocal boundary-value problems [PDF]

open access: yesElectronic Journal of Differential Equations, 2000
An infinite-dimensional gradient method is proposed for the numerical solution of nonlocal quasilinear boundary-value problems. The iteration is executed for the boundary-value problem itself (i.e.
J. Karatson
doaj   +3 more sources

A Two-Dimensional Nonlocal Fractional Parabolic Initial Boundary Value Problem [PDF]

open access: yesAxioms
In this paper, we investigate a two-dimensional singular fractional-order parabolic partial differential equation in the Caputo sense. The partial differential equation is supplemented with Dirichlet and weighted integral boundary conditions.
Said Mesloub   +2 more
doaj   +2 more sources

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