讨论非线性三阶三点边值问题{u''(t)+a(t)f(u(t))=0,t∈[0,1],u(0)=u′(0)=0,u(1)=αu′(η).在给出相应的Green函数并讨论其性质的基础上,运用Guo-Krasnoselskii不动点定理获得了上述三阶三点边值问题正解的存在性.
This paper is concerned with the following nonlinear third-order three-point boundary value problem {u''(t)+a(t)f(u(t))=0,t∈,u(0)=u′(0)=0,u(1)=αu′(η).The corresponding Green's function is given and its properties are discussed.And then,the existence of positive solution for the above boundary value problem is obtained by using the Guo-Krasnoselskii fixed point theorem.