无闭轨Lienard系统的拓扑分类(Ⅱ_2)

Topological classification of Lienard systems without closed orbits(Ⅱ_2)

在Gauss球面上，讨论了Lienard系统的拓扑分类问题，分析了极限集的情况和可能的拓扑结构，最后证明了天闭轨Lienard系统有64种可能的不同拓扑结构．

The problem of classification of Lienard systems is discussed on Gauss sphere.Their limit sets are studed. The results show that Lienard systems without closed orbits can have 64 possible different topo1ogical structures.