arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0609802math.COmath.PR
收藏

随机重图是简单图的概率

The probability that a random multigraph is simple

Svante Janson

摘要:

考虑一个顶点度为d_1,.的随机多重图G*,d_n,由组态模型构造。我们证明了,对于边数为(d_1+...+)的多重图序列,渐近地d_n)/2趋于无穷大时,重图是简单图的概率不为0当且仅当\sum d_i^2=O(\sum d_i).这是以前所知道的,只有在额外的预防措施的最大程度。我们还给出了一个渐近公式,这个概率,扩展了以前的结果由几个作者。

英文摘要:

Consider a random multigraph G* with given vertex degrees d_1,...,d_n, contructed by the configuration model. We show that, asymptotically for a sequence of such multigraphs with the number of edges (d_1+...+d_n)/2 tending to infinity, the probability that the multigraph is simple stays away from 0 if and only if \sum d_i^2=O(\sum d_i). This was previously known only under extra assumtions on the maximum degree. We also give an asymptotic formula for this probability, extending previous results by several authors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑