Electronic Journal of Probability
- Electron. J. Probab.
- Volume 23 (2018), paper no. 118, 31 pp.
Monotonous subsequences and the descent process of invariant random permutations
It is known from the work of Baik, Deift and Johansson  that we have Tracy-Widom fluctuations for the longest increasing subsequence of uniform permutations. In this paper, we prove that this result holds also in the case of the Ewens distribution and more generally for a class of random permutations with distribution invariant under conjugation. Moreover, we obtain the convergence of the first components of the associated Young tableaux to the Airy Ensemble as well as the global convergence to the Vershik-Kerov-Logan-Shepp shape. Using similar techniques, we also prove that the limiting descent process of a large class of random permutations is stationary, one-dependent and determinantal.
Electron. J. Probab., Volume 23 (2018), paper no. 118, 31 pp.
Received: 11 June 2018
Accepted: 11 November 2018
First available in Project Euclid: 27 November 2018
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Primary: 60C05: Combinatorial probability
Kammoun, Mohamed Slim. Monotonous subsequences and the descent process of invariant random permutations. Electron. J. Probab. 23 (2018), paper no. 118, 31 pp. doi:10.1214/18-EJP244. https://projecteuclid.org/euclid.ejp/1543287754