We mainly prove the following four conclusions : ( 1 ) every isolated recurrent point is an isolated non - wandering point 我们主要证明了以下结论: ( 1 )孤立的回复点都是孤立的非游荡点。
2.
( 2 ) the non - wandering points with infinite orbit that are not recurrent are the two - order accumulation points of the set of recurrent points ( 2 )不是回复点的具有无限轨道的非游荡点是回复点集的二阶聚点。