The change of electrical resistivity with time at early ages was used to investigate the hydration process and the poros......

一个含有生成闭迹的图称为超欧拉图。设G是n阶3－边连通图，若对任意G的边数为3的最小边割E都满足G－E遥每一连通分支的阶至少为（n-1）／10，则......

Given a simple graph G with n vertices and m edges, the spanning tree problem is to find a spanning tree for a given gra......