Results 11 to 20 of about 1,617 (206)

Nonlocal Boundary-Value Problems with Local Boundary Conditions

open access: yes, 2023
We describe and analyze nonlocal integro-differential equations with classical local boundary conditions. The interaction kernel of the nonlocal operator has horizon parameter dependent on position in the domain, and vanishes as the boundary of the domain is approached.
Scott, James M., Du, Qiang
openaire   +2 more sources

On a Boundary Value Problem for the Biharmonic Equation with Multiple Involutions

open access: yesMathematics, 2021
A nonlocal analogue of the biharmonic operator with involution-type transformations was considered. For the corresponding biharmonic equation with involution, we investigated the solvability of boundary value problems with a fractional-order boundary ...
Batirkhan Turmetov   +2 more
doaj   +1 more source

Nonlocal boundary value problems with BV-type data

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2020
In this paper we present some existence and uniqueness results for solutions of second order boundary value problems, which are functions of bounded variation along with their derivatives.
Jürgen Appell   +2 more
doaj   +1 more source

Nonlocal Integro-Differential Equations of the Second Order with Degeneration

open access: yesMathematics, 2020
We study the solvability for boundary value problems to some nonlocal second-order integro–differential equations that degenerate by a selected variable.
Aleksandr I. Kozhanov
doaj   +1 more source

On a Nonlocal Boundary Value Problem at Resonance

open access: yesJournal of Mathematical Analysis and Applications, 2001
Let \(E\) be the interval \([0,1]\) of \(\mathbb{R}\) and let \(N:C^1(E,\mathbb{R}) \rightarrow L^1(E,\mathbb{R})\) be a continuous operator. The authors study the existence of solutions to the initial value problem \[ Lx(t)=x''(t)=Nx(t), \text{ a.a.t.
Karakostas, G. L., Tsamatos, P. C.
openaire   +2 more sources

Weakly nonlocal boundary value problems with application to geology [PDF]

open access: yesDifferential Equations & Applications, 2021
In many cases, groundwater flow in an unconfined aquifer can be simplified to a one-dimensional Sturm-Liouville model of the form: \begin{equation*} x''(t)+λx(t)=h(t)+\varepsilon f(x(t)),\hspace{.1in}t\in(0,π) \end{equation*} subject to non-local boundary conditions \begin{equation*} x(0)=h_1+\varepsilonη_1(x)\text{ and } x(π)=h_2+\varepsilonη_2(x ...
Maroncelli, Daniel, Collins, Emma
openaire   +3 more sources

Solutions to nonlocal Neumann boundary value problems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
In this paper we study the nonlocal Neumann boundary value problem of the following form $$ u'' =f(t,u,u'),\quad u'(0)=0, \quad u'(1)=\int_{0 }^{1}u'(s)dg(s), $$ where $f:[0,1]\times\mathbb R^n\times\mathbb R^n\to\mathbb R^n$ and $g=\mbox{diag}(g_1 ...
Katarzyna Szymanska-Debowska
doaj   +1 more source

Maximal regular boundary value problems in Banach-valued function spaces and applications

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The nonlocal boundary value problems for differential operator equations of second order with dependent coefficients are studied. The principal parts of the differential operators generated by these problems are non-selfadjoint.
Veli B. Shakhmurov
doaj   +1 more source

Hilfer–Hadamard Fractional Boundary Value Problems with Nonlocal Mixed Boundary Conditions

open access: yesFractal and Fractional, 2021
This paper is concerned with the existence and uniqueness of solutions for a Hilfer–Hadamard fractional differential equation, supplemented with mixed nonlocal (multi-point, fractional integral multi-order and fractional derivative multi-order) boundary ...
Bashir Ahmad, Sotiris K. Ntouyas
doaj   +1 more source

Positive solutions of some higher order nonlocal boundary value problems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2009
We show how a unified method, due to Webb and Infante, of tackling many nonlocal boundary value problems, can be applied to nonlocal versions of some recently studied higher order boundary value problems.
Jeff Webb
doaj   +1 more source

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