Results 71 to 80 of about 767 (126)
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 +2 more
core +1 more source
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
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
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
Existence of Infinitely Many Solutions for a Quasilinear Elliptic Problem on Time Scales [PDF]
International Journal of Pure and Applied Mathematics, Vol.39,
No.2, 2007, pp. 239--248, 2007 We study a boundary-value quasilinear elliptic problem on a generic time scale. Making use of the fixed-point index theory, sufficient conditions are given to obtain existence, multiplicity, and infinite solvability of positive solutions.
arxiv
Solutions to a boundary value problem of a fourth-order impulsive differential equation
, 2013 This paper is concerned with the existence of solutions to a boundary value problem of a fourth-order impulsive differential equation with a control parameter λ.
Jingli Xie, Zhiguo Luo
semanticscholar +1 more source
On singularly weighted generalized Laplacian systems and their applications
Advances in Nonlinear Analysis, 2018 We study the homogeneous Dirichlet boundary value problem of generalized Laplacian systems with a singular weight which may not be integrable. Some explicit intervals which correspond to the existence and nonexistence of positive solutions for the system
Xu Xianghui, Lee Yong-Hoon
doaj +1 more source
Semiclassical states for weakly coupled nonlinear Schrödinger systems [PDF]
J. Eur. Math. Soc. (JEMS) 10 (2008), 47-71, 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. We obtain sufficient and necessary conditions for a sequence of least energy solutions to concentrate.
arxiv
One-dimensional singular problems involving the p-Laplacian and nonlinearities indefinite in sign
Advances in Nonlinear Analysis, 2016 Let Ω be a bounded open interval, let p>1${p>1}$ and γ>0${\gamma>0}$, and let m:Ω→ℝ${m:\Omega\rightarrow\mathbb{R}}$ be a function that may change sign in Ω.
Kaufmann Uriel, Medri Iván
doaj +1 more source