给出某些5-连通图中某些最长圈上的可收缩边的分布情况,得到如下结果:某些5-连通图的某些最长圈上至少有两条可收缩边。
The distribution of the contractible edges on some longest cycles of some 5-connected graphs was given. The results show that some of the longest cycles of some 5-connected graphs have at least two contractible edges.