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The probability of unusually large components in the near-critical Erdős–Rényi graph

Part of: Combinatorial probability Graph theory

Published online by Cambridge University Press:  20 March 2018

Matthew I. Roberts
Matthew I. Roberts*
Affiliation:
University of Bath
*
* Postal address: Department of Mathematical Sciences, University of Bath, Bath BA2 7AY, UK. Email address: mattiroberts@gmail.com
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Abstract

The largest components of the critical Erdős–Rényi graph, G(n, p) with p = 1 / n, have size of order n2/3 with high probability. We give detailed asymptotics for the probability that there is an unusually large component, i.e. of size an2/3 for large a. Our results, which extend the work of Pittel (2001), allow a to depend upon n and also hold for a range of values of p around 1 / n. We also provide asymptotics for the distribution of the size of the component containing a particular vertex.

Keywords

Erdős–Rényirandom graphcomponent sizecritical window

MSC classification

Primary: 60C05: Combinatorial probability
Secondary: 05C80: Random graphs
Type
Original Article
Information
Advances in Applied Probability , Volume 50 , Issue 1 , March 2018 , pp. 245 - 271
Copyright
Copyright © Applied Probability Trust 2018 

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