The Variance and the Asymptotic Distribution of the Length of Longest $k$-alternating Subsequences

We obtain an explicit formula for the variance of the number of $k$-peaks in a uniformly random permutation. This is then used to obtain an asymptotic formula for the variance of the length of longest $k$-alternating subsequence in random permutations. Also a central limit is proved for the latter s...

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Bibliographic Details
Main Authors: Altar Çiçeksiz, Yunus Emre Demirci, Ümit Işlak
Format: Article
Language:English
Published: Discrete Mathematics & Theoretical Computer Science 2023-05-01
Series:Discrete Mathematics & Theoretical Computer Science
Subjects:
Online Access:https://dmtcs.episciences.org/10296/pdf