arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.07289math.CO
收藏

随机超图中高阶连通性的阈值和首中时

Threshold and hitting time for high-order connectivity in random hypergraphs

Oliver Cooley, Mihyun Kang, Christoph Koch

摘要:

考虑$k$ -一致超图的连通性定义:两个$j$ -集是$j$ -连通的,如果它们之间有一条边的行走,使得两个连续的边至少相交于$j$的顶点.确定了边概率为$p$的随机$k$ -均匀超图成为$j$ -连通的概率为高的阈值.我们还推导出一个随机超图过程的首中时结果-超图成为$j$ -连接的时刻正好是最后一个孤立的$j$ -集消失的时刻。这推广了著名的结果图。

英文摘要:

We consider the following definition of connectivity in $k$-uniform hypergraphs: Two $j$-sets are $j$-connected if there is a walk of edges between them such that two consecutive edges intersect in at least $j$ vertices. We determine the threshold at which the random $k$-uniform hypergraph with edge probability $p$ becomes $j$-connected with high probability. We also deduce a hitting time result for the random hypergraph process -- the hypergraph becomes $j$-connected at exactly the moment when the last isolated $j$-set disappears. This generalises well-known results for graphs.

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。

↑