Results 81 to 90 of about 767 (126)
Energy convexity estimates for non-degenerate ground states of nonlinear 1D Schrödinger systems [PDF]
arXiv, 2009 We study the spectral structure of the complex linearized operator for a class of nonlinear Schr\"odinger systems, obtaining as byproduct some interesting properties of non-degenerate ground state of the associated elliptic system, such as being isolated and orbitally stable.
arxiv
Boundary Value Problems, 2014 We establish the existence of positive periodic solutions of the second-order differential equation x″+a(t)x=f(t,x)+c(t) via Schauder’s fixed point theorem, where a∈L1(R/TZ;R+), c∈L1(R/TZ;R), f is a Caratheodory function and it is singular at x=0.
You Ma
semanticscholar +1 more source
Advances in Nonlinear Analysis, 2016 We are concerned with the existence, uniqueness and global asymptotic behavior of positive continuous solutions to the second-order boundary value ...
Bachar Imed, Mâagli Habib
doaj +1 more source
Some remarks on positive solutions of nonlinear problems at resonance [PDF]
Journal of Informatics and Mathematical Sciences, Volume 3 (2011),
Number 3, pp. 291-293, 2011 The proof of a result of J. J. Nieto [3] appeared in "Acta Math, Hung". (1992) concerning the positive solutions of nonlinear problems at resonance is corrected and improved.
arxiv
Positive solutions of nth-order impulsive differential equations with integral boundary conditions
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016 This paper is concerned with the existence and nonexistence of positive solutions of nth-order impulsive boundary value problem with integral boundary conditions.
Tokmak Fen Fatma, Yaslan Karaca Ilkay
doaj +1 more source
Positive solutions for anisotropic discrete BVP [PDF]
arXiv, 2012 Using mountain pass arguments and the Karsuh-Kuhn-Tucker Theorem, we prove the existence of at least two positive solution of the anisotropic discrete Dirichlet boundary value problem. Our results generalize and improve those of [15].
arxiv
Advances in Differential Equations, 2014 The purpose of this paper is to establish some results on the existence and nonexistence of positive solutions for a type of nonlinear fractional-order two-point boundary value problems.
Yongping Sun, Xiaoping Zhang
semanticscholar +1 more source
Positive solutions of some nonlocal impulsive boundary value problem [PDF]
University of Glasgow, Department of Mathematics, Departmental Pre
print Series, (2008), 2013 We prove new results on the existence of positive solutions for some impulsive differential equation subject to nonlocal boundary conditions. Our boundary conditions involve an affine functional given by a Stieltjes integral. These cover the well known multi-point boundary conditions that are studied by various authors.
arxiv
Positive solutions of a nonlocal Caputo fractional BVP [PDF]
Dynamic Systems and Applications, 23, (2014), 715-722, 2013 We discuss the existence of multiple positive solutions for a nonlocal fractional problem recently considered by Nieto and Pimental. Our approach relies on classical fixed point index.
arxiv
Positive solutions for elastic beam equations with nonlinear boundary conditions and a parameter
, 2014 This paper is concerned with the existence, nonexistence, and uniqueness of convex monotone positive solutions of elastic beam equations with a parameter λ.
Wenxia Wang +3 more
semanticscholar +1 more source