Sawtooth models and asymptotic independence in large compositions

Pierre Tarrago

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arXiv · 1501.06596

Sawtooth models and asymptotic independence in large compositions

Pierre Tarrago

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Abstract

In this paper we improve the probabilistic approach to compositions of Ehrenborg, Levin and Readdy by introducing a simpler but more general probabilistic model. As consequence we get some new estimates on the behavior of a uniform random permutation $σ$ having a fixed descent set. In particular we show that independently of the shape of the descent set, $σ(i)$ and $σ(j)$ become independent when $i-j$ tends to $+\infty$.

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Pierre Tarrago. 2015-01-26. Sawtooth models and asymptotic independence in large compositions. https://arxiv.org/abs/1501.06596

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