摘要
使用一种新技巧,研究了两类偶数阶时滞微分方程的单调正解的存在任,得到了方程存在单调正解的一些充要条件和充分条件。
This paper deals with the existence of monotone solutions of even-order delay dif
ferntial equations. Some necessary and sufficent conditions and sufficient conditions for the
equations to have monotone positive solutions arc obtained.
基金
国家自然科学基金(19875083)
关键词
时滞微分方程
非负解
单调正解
delay differetial equation
nonnegative solution
monotone positive solution
