摘要
证明了一个微分恒等式,利用它得到了二阶非线性微分方程的一个充要条件,改进了已知的非振动性结果.
<Abstrcat> In this paper, a differential indentity is proved, with which we obtain the necessary and sufficient condition of nonoscillation for nonlinear differential equation of second order. The known (results of) nonoscillation are generalized.
出处
《黄冈师范学院学报》
2005年第3期1-2,6,共3页
Journal of Huanggang Normal University
基金
湖北省教育厅重点科研资助项目(2004D003).
关键词
微分恒等式
非线性微分方程
非振动
充要条件
differential identity
nonlinear differential equation
nonoscillation
necessary and sufficient condition
