节点文献
树扩图的生成树数
Number of Spanning Trees of Some Extended Trees
【摘要】 连通图的生成树是指该图的极小连通生成子图.本文在Cayley公式的基础上,给出每一树扩图类Pn(t)、K1,n-1(t)、Tn(a1,a2,…,ak;t)、Tn,k(t)中的图的生成树数相同.
【Abstract】 Let G be a connected graph,a spanning tree of G is a spanning subgraph of G which is a tree.In this paper,we have provided that they have the same number of spanning trees in the simple graphs of the sets of extended trees Pn(t),K1,n-1(t),Tn(a1,a2,…,ak;t),and Tn,k(t).
【关键词】 树;
生成树;
生成树数;
树扩图;
【Key words】 tree; spanning tree; the number of spanning trees; extended trees.;
【Key words】 tree; spanning tree; the number of spanning trees; extended trees.;
【基金】 南通大学自然科学基金资助
- 【文献出处】 辽宁大学学报(自然科学版) ,