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Some remarks about extreme degrees in a random graph

Published online by Cambridge University Press:  24 October 2008

Zbigniew Palka
Affiliation:
Institute of Mathematics, A. Mickiewicz University, Poznań, Poland

Extract

Let Kn, p be a random subgraph of a complete graph Kn obtained by removing edges, each with the same probability q = 1 – p, independently of all other edges (i.e. each edge remains in Kn, p with probability p). Very detailed results devoted to probability distributions of the number of vertices of a given degree, as well as of the extreme degrees of Kn, p, have already been obtained by many authors (see e.g. [l]–[5], [7]–[9]). A similar subject for other models of random graphs has been investigated in [10]–[13], The aim of this note is to give some supplementary information about the distribution of the ith smallest (i ≥ 1 is fixed) and the ith largest degree in a sparse random graph Kn, p, i.e. when p = p(n) = o(1).

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1986

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References

REFERENCES

[1]Bollobás, B.. The distribution of the maximum degree of a random graph. Discrete Math. 32 (1980), 201203.CrossRefGoogle Scholar
[2]Bollobás, B.. Degree sequences of random graphs. Discrete Math. 33 (1981), 119.CrossRefGoogle Scholar
[3]Bollobás, B.. Vertices of given degree in a random graph. J. Graph Theory 6 (1982), 147155.CrossRefGoogle Scholar
[4]Cornuéjols, G.. Degree sequences of random graphs. (To appear.)Google Scholar
[5]Erdös, P. and Rényi, A.. On the strength of connectedness of a random graph. Ada Math. Acad. Sci. Hungar. 12 (1961), 261267.CrossRefGoogle Scholar
[6]Feller, W.. An Introduction to Probability Theory and its Applications, vol. 1 (Wiley, 1968).Google Scholar
[7]Grimmett, G. and McDiarmid, C.. On colouring random graphs. Math. Proc. Cambridge Philos. Soc. 77 (1975), 313324.CrossRefGoogle Scholar
[8]Ivchenko, G.. On the asymptotic behaviour of degrees of vertices in a random graph. Theory Probab. Appl. 18 (1973), 188196.CrossRefGoogle Scholar
[9]Palka, Z.. On the number of vertices of given degree in a random graph. J. Graph Theory 8 (1984), 167170.CrossRefGoogle Scholar
[10]Palka, Z.. On the degrees of vertices in a bichromatic random graph. Period. Math. Hungar. 15 (1984), 121126.CrossRefGoogle Scholar
[11]Palka, Z.. Extreme degrees in random subgraphs of regular graphs. Math. Proc. Cambridge Philos. Soc. 97 (1985), 6978.CrossRefGoogle Scholar
[12]Palka, Z.. Extreme degrees in random graphs. J. Graph Theory (in the press).Google Scholar
[13]Palka, Z. and Ruciński, A.. Vertex-degrees in a random subgraph of a regular graph. (To appear.)Google Scholar