摘要
利用拓扑度理论中的Mawhin延拓定理,研究了三阶泛函微分方程的周期解的存在性,并改进推广了已有文献中的相应结论。
we study the existence of periodic solutions of third order functional differential equation by using the coincidence degree theory due to Mawhin. We also improve and extend some existing ones in the literature.
出处
《数学理论与应用》
2008年第1期82-85,共4页
Mathematical Theory and Applications
关键词
三阶泛函微分方程
重合度
周期解
存在性
third order functional differential equation coincidence degree periodic solution existence
