利用Kransnosel’skii不动点理论,研究了奇异非线性二阶三点边值{u″(t)+λh(t)f(u)=0,0〈t〈1 au(0)-βu′(0)=0,γu(1)+δu′(1)=bu(η)问题正解的存在性,突破了对问题中非线性项符号的限制.
By the Kransnoserskii fixed point theorem, the existence of positive solutions was studied for a nonlinear singular three point boundary value problem without restricting the sign of the nonlinear.