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Overlap Problems on the Circle

Published online by Cambridge University Press:  04 January 2016

S. Juneja*
Affiliation:
Tata Institute for Fundamental Research
M. Mandjes*
Affiliation:
University of Amsterdam, EURANDOM and Eindhoven University of Technology
*
Postal address: Tata Institute for Fundamental Research, Homi Bhabha Road, Colaba Mumbai, India. Email address: juneja@tifr.res.in
∗∗ Postal address: Korteweg-de Vries Institute for Mathematics, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, The Netherlands. Email address: m.r.h.mandjes@uva.nl
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Abstract

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Consider a circle with perimeter N > 1 on which k < N segments of length 1 are sampled in an independent and identically distributed manner. In this paper we study the probability π (k,N) that these k segments do not overlap; the density φ(·) of the position of the disks on the circle is arbitrary (that is, it is not necessarily assumed uniform). Two scaling regimes are considered. In the first we set kaN, and it turns out that the probability of interest converges (N→ ∞) to an explicitly given positive constant that reflects the impact of the density φ(·). In the other regime k scales as aN, and the nonoverlap probability decays essentially exponentially; we give the associated decay rate as the solution to a variational problem. Several additional ramifications are presented.

Information

Type
General Applied Probability
Copyright
© Applied Probability Trust