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一类非线性三阶边值问题正解的存在性
引用本文:王晓燕,张莉.一类非线性三阶边值问题正解的存在性[J].佳木斯工学院学报,2014(1):153-155.
作者姓名:王晓燕  张莉
作者单位:兰州工业学院基础学科部,甘肃兰州730050
基金项目:兰州工业学院校级科技计划项目(10K-015).
摘    要:运用Leray-Schauder不动点定理讨论了三阶常微分方程边值问题u碶(t)=λa(t)f(u(t)),t∈(0,1)αu′(0)-βu″(0)=0,u(1)=u′(1)=0正解的存在性,其中λ>0是参数,a∈C(0,1],R),f:R+→R连续且f(0)>0,α,β≥0,α+β>0。

关 键 词:三阶边值问题  Leray—Schauder不动点定理  正解

Existence of Positive Solutions of a Class of Nonlinear Third Order Boundary Value Problems
Authors:WANG Xiao -yah  ZHANG Li
Affiliation:(Department of Basic Courses, Lanzhou Institute of Technology, Lanzhou 730050, China)
Abstract:The author studied the existence of positive solutions of a class of nonlinear third order ordinary differential equation u?(t) =λa(t)f(u(t)),t∈(0,1)αu′(0) -βu″(0) =0,u(1) =u′(1) =0 whereλ〉0 is a parameter and a∈C(0,1],R),f:R+→R , is continuous and f(0) 〉0 α,β≥0,α+β〉0 .Our approach is based on the Leray -Schauder fixed point theorem .
Keywords:third order boundary value problem  Leray - Schauder fixed point theorem  positive solution
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