摘要
利用Ｂａｎａｃｈ空间的压缩映射原理，建立了偶数阶线性中立型时滞微分方程正解的存在性定理。
Making use the compression mapping principe of the Banach space, We establish the existence theorem of positive solutions of the even number order linaer neutral delay differential equations.
关键词
中立型
存在性
正解
时滞微分方程
Higher order
Neutral delay equation
Existence
Positive solution
Banach spsace.
