Results 61 to 70 of about 623 (90)

Some nonlinear second order equation modelling rocket motion [PDF]

arXiv, 2012
In this paper, we consider a nonlinear second order equation modelling rocket motion in the gravitational field obstructed by the drag force. The proofs of the main results are based on topological fixed point approach.
arxiv  

Positive solutions for nonlocal extended Fisher-Kolmogorov and Swift-Hohenberg equations via bifurcation methods [PDF]

arXiv, 2020
In this paper we study the existence of positive solutions for a class of nonlocal fourth-order nonautonomous differential equations which can be seen as generalization of extended Fisher-Kolmogorov and Swift-Hohenberg equations. The main result is proved using bifurcation theory.
arxiv  

Generalized quasilinearization method for a second order three point boundary-value problem with nonlinear boundary conditions

Electronic Journal of Differential Equations, 2002
The generalized quasilinearization technique is applied to obtain a monotone sequence of iterates converging uniformly and quadratically to a solution of three point boundary value problem for second order differential equations with nonlinear boundary ...
Bashir Ahmad, Rahmat Ali Khan, Paul W. Eloe   +2 more
doaj  

A new method for converting boundary value problems for impulsive fractional differential equations to integral equations and its applications

Advances in Nonlinear Analysis, 2017
In this paper, we present a new method for converting boundary value problems of impulsive fractional differential equations to integral equations. Applications of this method are given to solve some types of anti-periodic boundary value problems for ...
Liu Yuji
doaj   +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  

Higher-order nonlocal multipoint q-integral boundary value problems for fractional q-difference equations with dual hybrid terms

Open Mathematics
In this article, we introduce and study a new class of higher-order fractional q-difference equations involving Riemann-Liouville q-derivatives with dual hybrid terms, supplemented with nonlocal multipoint q-integral boundary conditions. The existence of
Alsaedi Ahmed, Alharbi Boshra, Ahmad Bashir   +2 more
doaj   +1 more source

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  

Double B-tensor and quasi-double B-tensor [PDF]

arXiv, 2014
In this paper, we propose two new classes of tensors: double B-tensors and quasi-double B-tensors, give some properties of double B-tensors and quasi-double B-tensors, discuss their relationships with B-tensors and positive definite tensors and show that even order symmetric double B-tensors and even order symmetric quasi-double B-tensors are positive ...
arxiv  

Recovering Dirac Operator with Nonlocal Boundary Conditions [PDF]

arXiv, 2015
In this paper inverse problems for Dirac operator with nonlocal conditions are considered. Uniqueness theorems of inverse problems from the Weyl-type function and spectra are provided, which are generalizations of the well-known Weyl function and Borg's inverse problem for the classical Dirac operator.
arxiv  

EXISTENCE OF EXTREMAL SOLUTIONS FOR SOME FOURTH [PDF]

, 2007
In this work we present sufficient conditions for the existence of extremal solutions for some fourth order functional problem with the nonlinearity and boundary functions not necessarily continuous, but satisfying some monotonicity assumptions.
Minhós, Feliz
core