摘要
在中心焦点判定问题中,时间可逆性是一个非常有用的概念.给出了时间可逆系统的一个性质,利用此性质可以优化时间可逆条件推导的算法.对一类解析微分系统,给出了系统具有非退化中心的充要条件,利用此结论构造了三次微分系统的一些非平凡中心条件.
Time-Reversibility is a very useful ty of time-reversible systems has been introd time-reversibility conditi tions ensuring the origin tions have been found fo ons. For a class of to be centered have r cubic systems. concept for the center-focus problem. In this paper, a proper- uced, which can be used to optimize the algorthm for deducing analytic differential systems, necessary and sufficient condi- been obtained. By the result, several non-trivial center condi-
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第10期26-29,共4页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金数学天元基金资助项目(11226041)
关键词
三次系统
中心焦点问题
时间可逆性
特征集
cubic systems
center-focus problem
time-reversibility
characteristic-sets
