Results 11 to 20 of about 9,402,651 (232)

Positive solutions of a boundary value problem with integral boundary conditions [PDF]

open access: yesElectronic Journal of Differential Equations, 2011
We consider boundary-value problems studied in a recent paper. We show that some existing theory developed by Webb and Infante applies to this problem and we use the known theory to show how to find improved estimates on parameters $mu^*, lambda ...
Jeff R. L. Webb
doaj   +10 more sources

Localized direct segregated boundary-domain integral equations for variable-coefficient transmission problems with interface crack [PDF]

open access: yes, 2011
The full text of the published article can be accessed at the link belowSome transmission problems for scalar second order elliptic partial differential equations are considered in a bounded composite domain consisting of adjacent anisotropic subdomains ...
Mikhailov, SE   +2 more
core   +6 more sources

Analysis of some localized boundary-domain integral equations [PDF]

open access: yes, 2009
Some direct segregated localized boundary-domain integral equation (LBDIE) systems associated with the Dirichlet and Neumann boundary value problems (BVP) for a scalar "Laplace" PDE with variable coefficient are formulated and analysed. The parametrix is
Mikhailov, SE   +2 more
core   +6 more sources

Analysis of two-operator boundary-domain integral equations for variable-coefficient mixed BVP [PDF]

open access: yes, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2011 Steklov Mathematical Institute RAS.Applying the two-operator approach, the mixed (Dirichlet–Neumann) boundary value ...
Mikhailov, SE, Ayele, TG
core   +6 more sources

Existence results for fractional order differential equation with nonlocal Erdélyi–Kober and generalized Riemann–Liouville type integral boundary conditions at resonance

open access: yesAdvances in Difference Equations, 2018
In this paper, we discuss a nonlinear fractional order boundary value problem with nonlocal Erdélyi–Kober and generalized Riemann–Liouville type integral boundary conditions. By using Mawhin continuation theorem, we investigate the existence of solutions
Qiao Sun, Shuman Meng, Yujun Cui
doaj   +1 more source

Positive solutions of nonlinear fourth-order boundary-value problems with local and non-local boundary conditions [PDF]

open access: yes, 2008
We establish new existence results for multiple positive solutions of fourth-order nonlinear equations which model deflections of an elastic beam. We consider the widely studied boundary conditions corresponding to clamped and hinged ends and many non ...
J. R. L. Webb   +5 more
core   +1 more source

Positive Solutions of nth-Order Boundary Value Problems with Integral Boundary Conditions

open access: yesMathematical Modelling and Analysis, 2015
In this paper, by using double fixed point theorem and a new fixed point theorem, some sufficient conditions for the existence of at least two and at least three positive solutions of an nth-order boundary value problem with integral boundary conditions ...
Ilkay Yaslan Karaca, Fatma Tokmak Fen
doaj   +1 more source

On the uniqueness of linear convection–diffusion equations with integral boundary conditions

open access: yesComptes Rendus. Mathématique, 2023
We investigate a class of convection–diffusion equations in an expanding domain involving a parameter, where we consider integral boundary conditions that depend non-locally on unknown solutions.
Lee, Chiun-Chang   +2 more
doaj   +1 more source

A four-point nonlocal integral boundary value problem for fractional differential equations of arbitrary order

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
This paper studies a nonlinear fractional differential equation of an arbitrary order with four-point nonlocal integral boundary conditions. Some existence results are obtained by applying standard fixed point theorems and Leray-Schauder degree theory ...
Bashir Ahmad, Sotiris Ntouyas
doaj   +1 more source

Localized boundary-domain integral equation formulation for mixed type problems [PDF]

open access: yes, 2010
Copyright @ 2010 Walter de Gruyter GmbHSome modified direct localized boundary-domain integral equations (LBDIEs) systems associated with the mixed boundary value problem (BVP) for a scalar “Laplace” PDE with variable coefficient are formulated and ...
Mikhailov, SE   +5 more
core   +1 more source

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