具有正负系数的非线性中立型方程的振动定理  

OSCILLATION THEOREM OF NONLINEAR NEUTRAL EQUATIONS WITH POSITIVE AND NEGATIVE COEFFICIENTS

作　　者：林丹玲[1] 屈英[2] 

机构地区：[1]韩山师范学院数学与应用数学系,广东潮州521041 [2]中央财经大学应用数学学院,北京100081

出　　处：《数学杂志》2013年第4期721-728,共8页Journal of Mathematics

摘　　要：本文研究了一类具有正负系数的二阶非线性中立型时滞微分方程的振动问题.利用变限积分方法,获得了此类方程若干新的振动定理,结果推广和改进了最近Manojlovic等人在文献[4]中得到的结果.In this article the authors investigate the oscillation problem of a class of second order nonlinear neutral delay differential equations with positive and negative coefficients. By using integral method with variable limits, several new oscillation theorems of the equations are obtained. Our results here extend and improve the recent results given in the paper [4].

关 键 词：中立型方程 正负系数 非线性 振动 

分 类 号：O175.12[理学—数学]