一类非线性三阶边值问题正解的存在性 |
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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. |
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作者姓名: | 王晓燕 张莉 |
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作者单位: | 兰州工业学院基础学科部,甘肃兰州730050 |
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基金项目: | 兰州工业学院校级科技计划项目(10K-015). |
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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。
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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 |
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Authors: | WANG Xiao -yah ZHANG Li |
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Affiliation: | (Department of Basic Courses, Lanzhou Institute of Technology, Lanzhou 730050, China) |
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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 . |
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Keywords: | third order boundary value problem Leray - Schauder fixed point theorem positive solution |
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