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2011 Randomised Reproducing Graphs
Jonathan Jordan
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Electron. J. Probab. 16: 1549-1562 (2011). DOI: 10.1214/EJP.v16-921

Abstract

We introduce a model for a growing random graph based on simultaneous reproduction of the vertices. The model can be thought of as a generalisation of the reproducing graphs of Southwell and Cannings and Bonato et al to allow for a random element, and there are three parameters, $\alpha$, $\beta$ and $\gamma$, which are the probabilities of edges appearing between different types of vertices. We show that as the probabilities associated with the model vary there are a number of phase transitions, in particular concerning the degree sequence. If $(1+\alpha)(1+\gamma)<1$ then the degree distribution converges to a stationary distribution, which in most cases has an approximately power law tail with an index which depends on $\alpha$ and $\gamma$. If $(1+\alpha)(1+\gamma)>1$ then the degree of a typical vertex grows to infinity, and the proportion of vertices having any fixed degree $d$ tends to zero. We also give some results on the number of edges and on the spectral gap.

Citation

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Jonathan Jordan. "Randomised Reproducing Graphs." Electron. J. Probab. 16 1549 - 1562, 2011. https://doi.org/10.1214/EJP.v16-921

Information

Accepted: 22 August 2011; Published: 2011
First available in Project Euclid: 1 June 2016

zbMATH: 1244.05211
MathSciNet: MR2827470
Digital Object Identifier: 10.1214/EJP.v16-921

Subjects:
Primary: 05C82
Secondary: 60G99, 60J10

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