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arXiv math/0703269math.COmath.PR
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具有给定度序列的稀疏随机图的渗流

Percolation on sparse random graphs with given degree sequence

Nikolaos Fountoulakis

摘要:

研究了具有给定度序列的稀疏随机图上的两种最常见的渗流过程。也就是说,我们首先检查一个键渗流过程中,图的边缘保留概率为p,然后我们专注于网站渗流的顶点保留概率为p。我们建立临界值p以上的一个巨大的组件出现在这两种情况下。此外,我们表明,事实上,这些是一致的。作为特例,我们的结果适用于幂律随机图。我们得到了严格的证明公式推导出的几个物理学家这样的图。

英文摘要:

We study the two most common types of percolation process on a sparse random graph with a given degree sequence. Namely, we examine first a bond percolation process where the edges of the graph are retained with probability p and afterwards we focus on site percolation where the vertices are retained with probability p. We establish critical values for p above which a giant component emerges in both cases. Moreover, we show that in fact these coincide. As a special case, our results apply to power law random graphs. We obtain rigorous proofs for formulas derived by several physicists for such graphs.

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