Positive solutions of three-point boundary-value problems for p-Laplacian singular differential equations

Date

2005-10-07

Authors

Galanis, George N.
Palamides, Alex P.

Journal Title

Journal ISSN

Volume Title

Publisher

Texas State University-San Marcos, Department of Mathematics

Abstract

In this paper we prove the existence of positive solutions for the three-point singular boundary-value problem -[ϕp (u')]' = q(t) ƒ(t, u(t)), 0 < t < 1 subject to u(0) - g(u'(0)) = 0, u(1) - βu(η) = 0 or to u(0) - αu(η) = 0, u(1) + g(u'(1)) = 0, where ϕp is the p-Laplacian operator, 0 < η < 1; 0 < α, β < 1 are fixed points and g is a monotone continuous function defined on the real line ℝ with g(0) = 0 and ug(u) ≥ 0. Our approach is a combination of Nonlinear Alternative of Leray-Schauder with the properties of the associated vector field at the (u, u') plane. More precisely, we show that the solutions of the above boundary-value problem remains away from the origin for the case where the nonlinearity is sublinear and so we avoid its singularity at u = 0.

Description

Keywords

Three-point singular boundary-value problem, p-Laplacian, Positive and negative solutions, Vector field, Nonlinear alternative of Leray-Schauder

Citation

Galanis, G. N., & Palamides, A. P. (2005). Positive solutions of three-point boundary-value problems for p-Laplacian singular differential equations. <i>Electronic Journal of Differential Equations, 2005</i>(106), pp. 1-18.

Rights

Attribution 4.0 International

Rights Holder

Rights License