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Limit theorems for random permutations induced by Chinese restaurant processes

Probability 2024-12-20 v2

Abstract

We investigate the random permutation matrices induced by the Chinese restaurant processes with (α,θ)(\alpha,\theta)-seating. When α=0,θ>0\alpha=0,\theta>0, the permutations are those following Ewens measures on symmetric groups, and have been extensively studied in the literature. Here, we consider α(0,1)\alpha\in(0,1) and θ>α\theta>-\alpha. In an accompanying paper, a functional central limit theorem is established for partial sum of weighted cycle counts in the form of j=1najCn,j\sum_{j=1}^n a_jC_{n,j}, where Cn,jC_{n,j} is the number of jj-cycles of the permutation matrix of size nn. Two applications are presented. One is on linear statistics of the spectrum, and the other is on the characteristic polynomials outside the unit circle.

Keywords

Cite

@article{arxiv.2412.02162,
  title  = {Limit theorems for random permutations induced by Chinese restaurant processes},
  author = {Jaime Garza and Yizao Wang},
  journal= {arXiv preprint arXiv:2412.02162},
  year   = {2024}
}

Comments

18 pages; Section 5 revised

R2 v1 2026-06-28T20:20:49.138Z