Other enumeration problems lead us to the study of orbits of permutation groups . 其它的计数问题引导我们去研究置换群的轨道。
2.
Abstract : the homeomorphism classification of graphlike manifolds can be transformed into a 2 - edge - colouring enumeration problem for graphs . this paper is a further study of this new - type enumeration problem 文摘:图式流形的同胚分类可转化为图的一类2 -边着色计数问题.本文进一步讨论了这个计数问题的基本方法