摘要: 本文运用锥上的不动点定理研究了四阶非线性边值问题

多个正解的存在性, 其中 λ > 0 是参数,ρ
i∈ C
4−i([0,1],(0,∞)),i=0,1,2,3,4,f∈C([0,∞),[0,∞)),且在[0,1]的任何子区间上不恒为零。
Abstract:
This paper considers with the existence of multiple positive solutions for nonlinear fourth-order boundary value problems

by using fixed point theorem in cones. Where λ > 0 is a parameter, ρ
i∈ C
4−i([0,1],(0,∞)),i=0,1,2,3,4,f∈C([0,∞),[0,∞)),and does not vanish identically on any subinterval of [0,1].