摘要
通过Mawhin连续性定理和周期泛函的强不等式,研究了一类二阶具复杂偏差变元的时滞微分方程x″(t)+f(t,x(t),x′(t-τ0(t)))x′(t)+g(t,x(x(t-τ(t))))=q(t)的周期解问题,得到了关于此类方程的周期解存在性准则.
By the Mawhin's continuation theorem and a sharp inequality, the paper studied a kind of the second order differential equations with complex deviating argument x"(t)+f(t,x(t),z'(t-τ0(t)))x'(t)+g(t,x(x(t-τ(t))))=q(t), and the new existence criteria was obtained.
出处
《华中师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2010年第2期196-199,203,共5页
Journal of Central China Normal University:Natural Sciences
基金
广东省自然科学基金项目(9151008002000012)
广东技术师范学院青年项目(09kj901)
关键词
复杂偏差变元
强不等式
周期解
重合度
complex deviating argument
sharp inequality
periodic solution
theory of coincidence degree