考察了一类非线性常微分方程的三点边值问题,通过考察非线性项在有界集上的性质。运用Leray-Schauder非线性抉择及格林函数的性质,获得了单调递增正解存在性的新结果。推广改进了以前文献的相关结果。
A class of nonlinear three-point boundary value problems is considered, and the existence of monotone increasing positive solution is obtained by making use of the Leray-Schauder nonlinear alternative and the properties of Green function. The known ones are generalized and improved.