摘要
Let X be a tree and f be a continuous map from X into itself. Denote by г*the union of the set of one-side γ-limit points and the set of periodic points of f. We show in this paper that the attracting centre of f is г*.
Let X be a tree and f be a continuous map from X into itself. Denote by г*the union of the set of one-side γ-limit points and the set of periodic points of f. We show in this paper that the attracting centre of f is г*.