关于“二阶非线性泛函微分方程解的振动性质”一文的一点注记

Notes "on Oscillatory Properties of Second Order Nonlinear Functional Differential Equations

文中就文1所讨论的二阶非线性泛函微分方程x″(t)+p(t)x′(t-τ(t))+q(t)f(x(τ(t))=0的解的振动性质,利用文2的已知结果改进了文1的相应结果。

This paper studies the oscillation of second order nonlinear functional differential equationx"(t)+p(t)x' (t-T(t))+q(t)f(x(τ(t))=0 and improves the main results of 1 with results of 2-