假设有连通图G,e是其中一条边,如果G-e是不连通的,则边e是图G的一条割边。此情形下,G-e必包含两个连通分支。
...),e∈E(G),点z称为图G割点,如果u(G—z)> ∽fG),反之称z为连通点(connected vertex);边e称为图G的割边(cut edge)或者 桥(bridge),如果u(G—e)>u(G),,反之称e为连通边(connected),块(block)即不 含割点的连通图,D中不含割点的极...
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现代的割边设计并不是满是招摇的快乐谈话和闪亮的广告。
Modern cut-edge design isn't filled with loud happy talk and blinking advertisements.
在修割边和钻孔之间的裂纹用气弧消除,然后进行焊补。
The crack between the coped and hole was removed by air arc and then repaired by welding.
本文不利用收缩方法,直接证明了:当图G至多差一边有两棵边不相交的生成树时,G是超欧拉图或者G有割边。
In this note, no using the contraction method, we prove that if a graph G is one edge short of having two edge-disjoint spanning trees, then G has a cut edge or G is supereulerian.
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