Monotonicity, asymptotic normality and vertex degrees in random graphs

被引:4
|
作者
Janson, Svante [1 ]
机构
[1] Uppsala Univ, Dept Math, SE-75106 Uppsala, Sweden
关键词
asymptotic normality; conditional limit theorem; Cramer-Wold theorem; random allocations; random graphs; vertex degrees;
D O I
10.3150/07-BEJ6103
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
We exploit a result by Nerman which shows that conditional limit theorems hold when a certain monotonicity condition is satisfied. Our main result is an application to vertex degrees in random graphs, where we obtain asymptotic normality for the number of vertices with a given degree in the random graph G (n, m) with a fixed number of edges from the corresponding result for the random graph G(n, p) with independent edges. We also give some simple applications to random allocations and to spacings. Finally, inspired by these results, but logically independent of them, we investigate whether a one-sided version of the Cramer-Wold theorem holds. We show that such a version holds under a weak supplementary condition, but not without it.
引用
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页码:952 / 965
页数:14
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