in this paper, we mainly discuss the enumeration problem of the equivalence class of 3-nilpotent matrix defined in normal number fields.
主要对定义在一般数域上的3-幂零矩阵的相似等价类的个数问题进行探讨。
an enumeration problem is solved for labeled consistent bipartite tournaments, and a sharp formula is obtained.
通过讨论,解决了标定一致二部竞赛图的计数问题,并获得了一个简明计算公式。
the homeomorphism classification of graph like manifolds can be transformed into a 2 edge colouring enumeration problem for graphs.
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。
the enumeration problem for connective graphs with one nontrivial block was discussed by the theory of combinatorics, and the new conclusion is also given.
利用组合理论和图的计数理论,讨论了只含有一个非平凡块的连通图的计数问题,给出了新的结论。
in the last chapter, we consider the enumeration problem of rna secondary structures only for the fixed pairs using the pairing function.