机构地区: 广东工业大学应用数学学院应用数学系
出 处: 《Journal of Mathematical Research and Exposition》 2003年第1期98-102,共5页
摘 要: 讨论具有无穷时滞Lienard型方程x+(α~2F(x)/αx^2)x+g(t,x_t)=p(t)的周期解问题, 利用重合度理论得到了周期解存在的充分条件. The problem of periodic solutions for Lienard equations with infinite delay x+(?)x+g(t,xt)=p(t)is discussed by using Mawhin's,coincidence degree theory. Some new results on the existence of periodic solutions are derived.