On the Length of a Random Minimum Spanning Tree

On the Length of a Random Minimum Spanning Tree
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关于随机最小生成树的长度

DOI:
10.1017/s0963548315000024
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发表时间:
2012
期刊:
Combinatorics, Probability and Computing
影响因子:
--
通讯作者:
J. Spencer
J. Spencer
中科院分区:
--
文献类型:
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作者:
C. Cooper;A. Frieze;Nate Ince;S. Janson;J. Spencer

文献摘要

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我们研究当每条边e被赋予独立的均匀[0, 1]边权重时,完全图Kn的最小生成树的长度Ln的期望值。我们锐化 Frieze [6] 的结果 limn→∞$\mathbb{E}$(Ln) = ze(3) 并表明 $$ \mathbb{E}(L_n)=\zeta(3)+\frac{c_1}{n}+\frac{c_2+o(1)}{n^{4/3}}, $$ 其中 c1、c2 是显式定义的常量。
We study the expected value of the length Ln of the minimum spanning tree of the complete graph Kn when each edge e is given an independent uniform [0, 1] edge weight. We sharpen the result of Frieze [6] that limn→∞$\mathbb{E}$(Ln) = ζ(3) and show that $$ \mathbb{E}(L_n)=\zeta(3)+\frac{c_1}{n}+\frac{c_2+o(1)}{n^{4/3}}, $$ where c1, c2 are explicitly defined constants.