| 具有正负系数中立型微分方程的正解 |
| |
| 引用本文： | 唐先华,庾建设.具有正负系数中立型微分方程的正解[J].数学学报,1999,42(5):795-802. |
| |
| 作者姓名： | 唐先华 庾建设 |
| |
| 作者单位： | 1. 中南工业大学数软系,湖南长沙,410083
2. 湖南大学应用数学系,长沙,410082 |
| |
| 摘 要： | 本文研究具有正负系数的中立型微分方程X（t）-R（t）x（t-r）]'+P（t）x（t-r）-Q（t）x（t-δ）=0.在允许R（t）＋Q（s）ds1不成立的条件下，获得方程（*）存在正解的两个充分条件．
|
| 关 键 词： | 中立型方程 正解 正负系数 |
| 修稿时间： | :1997-10-2 |
On the Positive Solutions of a Kind of Neutral Equations with Positive and Negative Coeffcients |
| |
| Tang Xianhua,Yu Jianshe.On the Positive Solutions of a Kind of Neutral Equations with Positive and Negative Coeffcients[J].Acta Mathematica Sinica,1999,42(5):795-802. |
| |
| Authors: | Tang Xianhua Yu Jianshe |
| |
| Institution: | Tang Xianhua; Yu Jianshe (Department of Applied Mathematics, Hu'nan University, Changsha 410082, P. R. China)(E-mail: jsyu@mail. hunu. edu. cn) |
| |
| Abstract: | Consider the neutral differential equations with positive and negative coefficientsTwo sufficient conditions for the existence of positive solutions of Eq.(*) are obtained when R(t) Q(s)ds 1 is not satisfied. |
| |
| Keywords: | Neutral differential equation Positive solution Positive and negative coefficients |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《数学学报》浏览原始摘要信息 |
| 点击此处可从《数学学报》下载免费的PDF全文 |
