变系数中立型微分方程的振动性

QSCILLATION OF NEUTRAL FUNCTION DIFFERENTIAL EQUATIONS WITH VARIABLE COEFFTCIENTS

考虑变系数中立型微分方程其中ｐ（ｔ）、Ｑ（ｔ）∈Ｃ（ｔ０，＋∞），Ｒ），Ｑ（ｔ）≥０，＞０，＞０给出了（＊）的所有解振动的一族新的充分条件，改进了已有的结果．

Consider the following equation The sufficient condition which every solution of the equation is oscillation are given and some known results are improved.