拟弱几乎周期点的等价定义与系统的混沌性

THE EQUIVALENT DEFINITIONS OF QUASI-WEAKLY ALMOST PERIODIC POINTS AND CHAOS

1992年,周作领引进了弱几乎周期点这一概念.1995年,周和何伟弘又引进了拟弱几乎周期点这个概念,并利用它们深刻地刻画了一个动力系统的本质所在.为了更好地看出这两者的区别,首先从回复时间集的角度给出拟弱几乎周期点的等价定义,然后研究了一个存在真的拟弱几乎周期点的系统的混沌情况,得到了这样的系统是Takens-Ruelle混沌的.

In 1992, Zhou Zuoling introduced the notion of weakly almost periodic points. In 1995, Zhou and He Weihong introduced the notion of quasiweakly almost periodic points to reveal the essence of a dynamical system. In order to distinguish them more clearly, the equivalent definitions of them are given in the paper. At the end of this paper, the chaotic property of a transitive dynamical system is studied, in which there is a transitive quasi weakly almost periodic point but there is no weakly almost periodic one, and such system is Takens- Ruelle chaos system.