Permuton limit of a generalization of the Mallows and $k$-card-minimum models

Fuente: arXiv
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Autori principali: Jasińska, Joanna, Ráth, Balázs
Natura: Preprint
Pubblicazione: 2024
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author Jasińska, Joanna
Ráth, Balázs
author_facet Jasińska, Joanna
Ráth, Balázs
contents We introduce and study a new random permutation model that generalizes the $k$-card minimum model defined by Travers and the Mallows model. We calculate the permuton limit of such a sequence of random permutations. As a corollary, we deduce the law of large numbers for pattern densities. Moreover, we prove a universality result about the band structure of the limiting permuton, confirming a conjecture of Travers about the $k$-card minimum model. More specifically, we show that if a certain model parameter goes to infinity then the appropriately scaled restriction of the permuton measure to a line that intersects the diagonal perpendicularly converges weakly to the logistic distribution.
format Preprint
id arxiv_https___arxiv_org_abs_2412_07258
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Permuton limit of a generalization of the Mallows and $k$-card-minimum models
Jasińska, Joanna
Ráth, Balázs
Probability
60G42, 60J10, 60G42
We introduce and study a new random permutation model that generalizes the $k$-card minimum model defined by Travers and the Mallows model. We calculate the permuton limit of such a sequence of random permutations. As a corollary, we deduce the law of large numbers for pattern densities. Moreover, we prove a universality result about the band structure of the limiting permuton, confirming a conjecture of Travers about the $k$-card minimum model. More specifically, we show that if a certain model parameter goes to infinity then the appropriately scaled restriction of the permuton measure to a line that intersects the diagonal perpendicularly converges weakly to the logistic distribution.
title Permuton limit of a generalization of the Mallows and $k$-card-minimum models
topic Probability
60G42, 60J10, 60G42
url https://arxiv.org/abs/2412.07258