| 1. | First , we describe the birkhoff center , the minimal attractive center and the minimal attractor . second , we give relationships among the attractor of axiom a , the non - wandering set , the limit set , the birkhoff center , the probability limit set , the minimal attractive center , the minimal attractor , the ruelle attractor and the measure center
首先给出birkhoff中心、极小吸引中心、极小吸引子的刻划，然后给出对于公理a吸引子，非游荡集、极限集、 birkhoff中心、概率极限集、极小吸引中心、极小吸引子、 ruelle吸引子以及测度中心之间的一个层次关系。 |
