中立型时滞微分方程的振动性

Oscillations of Neutral Delay Differential Equations

本文讨论一类一阶中立型时滞微分方程的振动性，建立了此类方程一切解振动的几族充分条件，作为其推论的结果改进了文［１］，［２］，［３］的相应定理。

In tkis paper. we consider certain first order delay differential equations of neutraltype. and obtian several classes of sufficient conditions for the oscillation of all of its solutions. As corollaries to our resnlts. the corresponding theorems in[1] ,[2],[3]are improved.