Spanning k-Trees of n-Connected Graphs
Spanning k-Trees of n-Connected Graphs
复制标题
DOI:
10.1007/s00373-011-1021-6
复制
发表时间:
2011-05
影响因子:
0.7
通讯作者:
M. Kano;Hiroo Kishimoto
中科院分区:
文献类型:
--
作者:
M. Kano;Hiroo Kishimoto
A tree is called ak-tree if the maximum degree is at mostk. We prove the following theorem, by which a closure concept for spanningk-trees ofn-connected graphs can be defined. Letk≥ 2 andn≥ 1 be integers, and letuandvbe a pair of nonadjacent vertices of ann-connected graphGsuch that degG(u) + degG(v) ≥ |G| − 1 − (k− 2)n, where |G| denotes the order ofG. ThenGhas a spanningk-tree if and only ifG+uvhas a spanningk-tree.