高阶中立型时滞微分方程正解的存在性

EXISTENCE OF POSITIVE SOLUTIONS OF HIGHER ORDER NEUTRAL DELAY EQUATIONS

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.