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Minima in branching random walks

Louigi Addario-Berry Bruce Reed 1 
1 MASCOTTE - Algorithms, simulation, combinatorics and optimization for telecommunications
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - COMRED - COMmunications, Réseaux, systèmes Embarqués et Distribués
Abstract : Given a branching random walk, let $M_n$ be the minimum position of any member of the $n$th generation. We calculate $\\mathbfEM_n$ to within O(1) and prove exponential tail bounds for $\\mathbfP{|M_n-\\mathbfEM_n|>x}$, under quite general conditions on the branching random walk. In particular, together with work by Bramson [Z. Wahrsch. Verw. Gebiete 45 (1978) 89―108], our results fully characterize the possible behavior of $\\mathbf EM_n$ when the branching random walk has bounded branching and step size.
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Submitted on : Wednesday, February 27, 2013 - 5:16:25 PM
Last modification on : Thursday, August 4, 2022 - 4:52:43 PM


  • HAL Id : hal-00795281, version 1



Louigi Addario-Berry, Bruce Reed. Minima in branching random walks. Annals of Probability, 2009, 37, pp.1044―1079. ⟨hal-00795281⟩



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