摘要
本文使用Krasnoselskii不动点定理,建立了一类高阶中立型泛函微分方程非振动解存在的充分条件,推广了部分已有的结果.
In the present paper the existence of positive solutions of high order neutral dif ferential equation is studied.Some sufficient conditions are given for the existence of positive solutions.It also is shown that these sufficient conditions is necessary'sharp'conditions.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1996年第3期40-41,共2页
Natural Science Journal of Xiangtan University