Results 61 to 70 of about 149,012 (219)

Analysis of direct segregated boundary-domain integral equations for variable-coefficient mixed bvps in exterior domains [PDF]

open access: yes, 2013
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2013 World Scientific Publishing.Direct segregated systems of boundary-domain integral equations are formulated for the mixed (
Mikhailov, SE   +2 more
core   +1 more source

Positive Solutions to Singular and Delay Higher-Order Differential Equations on Time Scales

open access: yesBoundary Value Problems, 2009
We are concerned with singular three-point boundary value problems for delay higher-order dynamic equations on time scales. Theorems on the existence of positive solutions are obtained by utilizing the fixed point theorem of cone expansion and ...
Liang-Gen Hu, Ti-Jun Xiao, Jin Liang
doaj   +1 more source

Weak Solutions of a Stochastic Model for Two-Dimensional Second Grade Fluids

open access: yesBoundary Value Problems, 2010
We initiate the investigation of a stochastic system of evolution partial differential equations modelling the turbulent flows of a second grade fluid filling a bounded domain of ℝ2.
P. A. Razafimandimby, M. Sango
doaj   +1 more source

New proof on exponential convergence for cellular neural networks with time-varying delays

open access: yesBoundary Value Problems, 2019
In this paper, we deal with a class of cellular neural networks with time-varying delays. Applying differential inequality strategies without assuming the boundedness conditions on the activation functions, we obtain a new sufficient condition that ...
Changjin Xu, Peiluan Li
doaj   +1 more source

Multi-dimensional Morse Index Theorems and a symplectic view of elliptic boundary value problems [PDF]

open access: yes, 2011
Morse Index Theorems for elliptic boundary value problems in multi-dimensions are proved under various boundary conditions. The theorems work for star-shaped domains and are based on a new idea of measuring the "oscillation" of the trace of the set of ...
Deng, Jian   +1 more
core   +1 more source

Blowup for degenerate and singular parabolic system with nonlocal source

open access: yesBoundary Value Problems, 2006
We deal with the blowup properties of the solution to the degenerate and singular parabolic system with nonlocal source and homogeneous Dirichlet boundary conditions.
Zhou Jun, Mu Chunlai, Li Zhongping
doaj  

Numerical approximation of the 3rd order pseudo-parabolic equation using collocation technique

open access: yesBoundary Value Problems
This study presents a novel numerical approach for approximating the solution of third-order pseudo-parabolic partial differential equations (PDEs), which exhibit both parabolic and hyperbolic characteristics.
Neeraj Dhiman   +4 more
doaj   +1 more source

The Existence and Behavior of Solutions for Nonlocal Boundary Problems

open access: yesBoundary Value Problems, 2009
The purpose of this work is to investigate the uniqueness and existence of local solutions for the boundary value problem of a quasilinear parabolic equation. The result is obtained via the abstract theory of maximal regularity. Applications are given to
Shengzhou Zheng, Yuandi Wang
doaj   +1 more source

Ulam stability to a toppled systems of nonlinear implicit fractional order boundary value problem

open access: yesBoundary Value Problems, 2018
In this manuscript, we give some sufficient conditions for existence, uniqueness and various kinds of Ulam stability for a toppled system of fractional order boundary value problems involving the Riemann–Liouville fractional derivative.
Zeeshan Ali, Akbar Zada, Kamal Shah
doaj   +1 more source

Localized boundary-domain integral formulations for problems with variable coefficients

open access: yes, 2002
Specially constructed localized parametrixes are used in this paper instead of a fundamental solution to reduce a boundary value problem with variable coefficients to a localized boundary-domain integral or integro-differential equation (LBDIE or LBDIDE).
S.E. Mikhailov, Mikhailov, SE
core   +1 more source

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