EXISTENCE OF PERIODIC SOLUTIONS TO A KIND OF HIGHER ORDER FUNCTIONAL DIFFERENTIAL EQUATION WITH TWO DEVIATING ARGUMENTS  

作　　者：Li Xiaojing (College of Math. and Phy., Jiangsu Teachers University of Tech., Changzhou 213015, Jiangsu) Zhang Zhirong, Lu Shiping (Dept. of Math., Anhui Normal University, Wuhu 241000, Anhui) 

出　　处：《Annals of Differential Equations》2008年第3期289-298,共10页微分方程年刊（英文版）

基　　金：Natural Science Foundation of Anhui Province (050460103);the Key Natural Science Foundation by the Bureau of Education of Anhui Province(KJ2008A05ZC).

摘　　要：In this paper, by the theory of Fourier series, Bernoulli number theory and continu-ation theorem of coincidence degree theory, we study a kind of higher order functional differential equation with two deviating arguments. Some new results on the existence of periodic solutions are obtained.In this paper, by the theory of Fourier series, Bernoulli number theory and continu-ation theorem of coincidence degree theory, we study a kind of higher order functional differential equation with two deviating arguments. Some new results on the existence of periodic solutions are obtained.

关 键 词：periodic solution higher order functional differential equation coin-cidence degree theory 

分 类 号：O175[理学—数学]