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The largest fragment of a homogeneous fragmentation process

Probability 2017-03-08 v2

Abstract

We show that in homogeneous fragmentation processes the largest fragment at time tt has size etΦ(pˉ)t32(logΦ)(pˉ)+o(1),e^{-t \Phi'(\bar{p})}t^{-\frac32 (\log \Phi)'(\bar{p})+o(1)}, where Φ\Phi is the L\'evy exponent of the fragmentation process, and pˉ\bar{p} is the unique solution of the equation (logΦ)(pˉ)=11+pˉ(\log \Phi)'(\bar{p})=\frac1{1+\bar{p}}. We argue that this result is in line with predictions arising from the classification of homogeneous fragmentation processes as logarithmically correlated random fields.

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Cite

@article{arxiv.1603.07293,
  title  = {The largest fragment of a homogeneous fragmentation process},
  author = {Andreas Kyprianou and Francis Lane and Peter Mörters},
  journal= {arXiv preprint arXiv:1603.07293},
  year   = {2017}
}

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20 pages