Results 61 to 70 of about 659 (103)

Existence of solutions for integral boundary value problems of second-order ordinary differential equations

, 2012
In this paper, we investigate the existence of solutions for some second-order integral boundary value problems, by applying new fixed point theorems in Banach spaces with the lattice structure derived by Sun and Liu.MSC:34B15, 34B18, 47H11.
Hongyu Li, Fei Sun
semanticscholar   +1 more source

Global behavior of positive solutions for some semipositone fourth-order problems

Advances in Difference Equations, 2018
In this paper, we study the global behavior of positive solutions of fourth-order boundary value problems {u′′′′=λf(x,u),x∈(0,1),u(0)=u(1)=u″(0)=u″(1)=0, $$ \textstyle\begin{cases} u''''=\lambda f(x,u), \quad x\in (0,1), \\ u(0)=u(1)=u''(0)=u''(1)=0 ...
Dongliang Yan, Ruyun Ma
doaj   +1 more source

High Multiplicity and Chaos for an Indefinite Problem Arising from Genetic Models

Advanced Nonlinear Studies, 2020
We deal with the periodic boundary value problem associated with the parameter-dependent second-order nonlinear differential ...
Boscaggin Alberto, Feltrin Guglielmo, Sovrano Elisa   +2 more
doaj   +1 more source

Positive solutions to fractional boundary value problems with nonlinear boundary conditions

, 2014
We consider the existence of at least one positive solution of the problem −D0+αu(t)=f(t,u(t ...
Wenquan Feng, Shurong Sun, Xinhui Li, Meirong Xu   +3 more
semanticscholar   +1 more source

Existence of positive solutions for singular fourth-order three-point boundary value problems

Advances in Differential Equations, 2013
In this article, we consider the boundary value problem u(4)(t)+f(t,u(t))=0 ...
Y. Sun, Cun Zhu
semanticscholar   +1 more source

Semiclassical states for weakly coupled nonlinear Schr\"odinger systems

, 2008
We consider systems of weakly coupled Schr\"odinger equations with nonconstant potentials and we investigate the existence of nontrivial nonnegative solutions which concentrate around local minima of the potentials.
Montefusco, Eugenio, Pellacci, Benedetta, Squassina, Marco   +2 more
core   +1 more source

ON THE MULTIPLE SOLUTIONS OF A NONHOMOGENEOUS STURM-LIOUVILLE EQUATION WITH NONLOCAL BOUNDARY CONDITIONS

International Journal of Apllied Mathematics, 2019
In this work, we are concerned with a nonlocal boundary value problem of nonhomogeneous Sturm-Liouville equation. Then existence of at least one solution will be proved. The spectral properties of the problem will be studied.
A. El-Sayed, M. Mohamed, R.E.M. Embia
semanticscholar   +1 more source

Regular Versus Singular Solutions in a Quasilinear Indefinite Problem with an Asymptotically Linear Potential

Advanced Nonlinear Studies, 2020
The aim of this paper is analyzing the positive solutions of the quasilinear ...
López-Gómez Julián, Omari Pierpaolo
doaj   +1 more source

Existence of multiple positive solutions for p-Laplacian multipoint boundary value problems on time scales

Advances in Differential Equations, 2013
In this paper, we consider p-Laplacian multipoint boundary value problems on time scales. By using a generalization of the Leggett-Williams fixed point theorem due to Bai and Ge, we prove that a boundary value problem has at least three positive ...
A. Dogan
semanticscholar   +1 more source

k-convex solutions for multiparameter Dirichlet systems with k-Hessian operator and Lane-Emden type nonlinearities

Advances in Nonlinear Analysis
In this article, our main aim is to investigate the existence of radial kk-convex solutions for the following Dirichlet system with kk-Hessian operators: Sk(D2u)=λ1ν1(∣x∣)(−u)p1(−v)q1inℬ(R),Sk(D2v)=λ2ν2(∣x∣)(−u)p2(−v)q2inℬ(R),u=v=0on∂ℬ(R).\left\{\begin ...
He Xingyue, Gao Chenghua, Wang Jingjing
doaj   +1 more source