It provides an effect theoretical tool for studying many nonlinear problems mainly including topological degree method variational method partial ordering method and analytic method and so on .

它为解决各种各样的非线性问题提供了一个富有成效的理论工具。利用非线性泛函分析研究问题的主要方法有： 拓扑度理论、临界点理论、半 序方法以及分析方法等。

A Simulated Elastic-Force Analysis of SOM on Topological Ordering

SOM 拓扑保 序机理的模拟弹性力分析

The algorithm works because if a vertex has no successors it must be the last one in the topological ordering .

算法能够执行是因为，如果一个顶点没有后继，那么它肯定是 拓扑 序列中的最后一个。