摘要
本文在βN上定义了一个新型的二元运算“-”并发现它与βN上著名的二元运算“+”具有某种联系。我们还证明了在(βN,N,σ)系统中存在幂等点u∈βN\N,使u既是循环点,又是稳定点。
This paper defines a new binary operation '-' on the βN, and finds itsrelation to the famous binary operation '+' on the βN. We prove that thereis an idempotent point u∈eβN\N in (βN, N, σ) system such that u is notonly a recurrent point, but also a stable point.
基金
国家自然科学基金
关键词
动力系统
循环点
稳定点
幂等点
dynamical system
recurrent point
stable point
idempotent
