摘要: In this paper, a kind of high order functional differential equation is considered. By using the theory of concidence degree, a sufficient condition of existence of at least one 2π-period solution is obtained.
中图分类号:
林金泉, 林文贤. 一类泛函数微分方程的周期解的存在性[J]. 数学季刊, 2011, 26(2): 256-259.
LIN Jin-quan, LIN Wen-xian. Existence of Periodic Solution for a Kind of Functional Differential Equation [J]. Chinese Quarterly Journal of Mathematics, 2011, 26(2): 256-259.