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引用次数: 3
摘要
我们考虑伪随机d $$ d $$正则图上的顶点渗透。第二作者先前的研究证实了在p=1d $$ p=\frac{1}{d} $$处存在从小组分到线性(在nd $$ \frac{n}{d} $$)尺寸组分的相变。在超临界状态下,我们的主要结果恢复了最大分量大小的尖锐渐近,并表明所有其他分量通常都要小得多。此外,我们还考虑了最大分量的其他典型性质,如边数、长循环的存在性和可扩展性。在亚临界状态下,我们加强了可能分量大小的上界。
We consider vertex percolation on pseudo‐random d$$ d $$ ‐regular graphs. The previous study by the second author established the existence of phase transition from small components to a linear (in nd$$ \frac{n}{d} $$ ) sized component, at p=1d$$ p=\frac{1}{d} $$ . In the supercritical regime, our main result recovers the sharp asymptotic of the size of the largest component, and shows that all other components are typically much smaller. Furthermore, we consider other typical properties of the largest component such as the number of edges, existence of a long cycle and expansion. In the subcritical regime, we strengthen the upper bound on the likely component size.
期刊介绍:
It is the aim of this journal to meet two main objectives: to cover the latest research on discrete random structures, and to present applications of such research to problems in combinatorics and computer science. The goal is to provide a natural home for a significant body of current research, and a useful forum for ideas on future studies in randomness.
Results concerning random graphs, hypergraphs, matroids, trees, mappings, permutations, matrices, sets and orders, as well as stochastic graph processes and networks are presented with particular emphasis on the use of probabilistic methods in combinatorics as developed by Paul Erdõs. The journal focuses on probabilistic algorithms, average case analysis of deterministic algorithms, and applications of probabilistic methods to cryptography, data structures, searching and sorting. The journal also devotes space to such areas of probability theory as percolation, random walks and combinatorial aspects of probability.