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The Minimum Vertex Degree of a Graph on Uniform Points in [0, 1]d

Published online by Cambridge University Press:  01 July 2016

Martin J. B. Appel*
Affiliation:
United Technologies Research Center
Ralph P. Russo*
Affiliation:
University of Iowa
*
Postal address: United Technologies Research Center, East Hartford, CT 06108, USA.
∗∗ Postal address: Department of Statistics and Actuarial Science, University of Iowa, Iowa City, IA 52242, USA.

Abstract

This article continues an investigation begun in [2]. A random graph Gn(x) is constructed on independent random points U1, · ··, Un distributed uniformly on [0, 1]d, d ≧ 1, in which two distinct such points are joined by an edge if the l-distance between them is at most some prescribed value 0 < x < 1.

Almost-sure asymptotic results are obtained for the convergence/divergence of the minimum vertex degree of the random graph, as the number n of points becomes large and the edge distance x is allowed to vary with n. The largest nearest neighbor link dn, the smallest x such that Gn(x) has no vertices of degree zero, is shown to satisfy Series and sequence criteria on edge distances {xn} are provided which guarantee the random graph to be complete, a.s. These criteria imply a.s. limiting behavior of the diameter of the vertex set.

Type
Stochastic Geometry and Statistical Applications
Copyright
Copyright © Applied Probability Trust 1997 

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References

[1] Appel, M. J. B. and Russo, R. P. (1997) Connectivity of a graph on uniform points in [0, 1] d. In preparation.Google Scholar
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