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JOURNALS // Diskretnaya Matematika // Archive

Diskr. Mat., 2021 Volume 33, Issue 3, Pages 64–78 (Mi dm1656)

This article is cited in 4 papers

On the asymptotic normality conditions for the number of repetitions in a stationary random sequence

V. G. Mikhailova, N. M. Mezhennayab, A. V. Volginc

a Steklov Mathematical Institute of Russian Academy of Sciences
b Bauman Moscow State Technical University
c MIREA — Russian Technological University

Abstract: We study conditions of the asymptotic normality of the number of repetitions (pairs of equal values) in a segment of strict sense stationary random sequence of values from $\{1,2,\ldots,N\}$ satisfying the strong uniform mixing condition. It is shown that under natural conditions for the number of repetitions to be asymptotically normal as the length of the segment tends to infinity it is necessary for the stationary distribution to be different from the equiprobable one. Under additional conditions the accuracy of the normal approximation in the uniform metrics is estimated.

Keywords: stationary sequence, $U$-statistics, repetitions of elements, normal approximation accuracy.

UDC: 519.214.5

Received: 08.07.2021

DOI: 10.4213/dm1656


 English version:
Discrete Mathematics and Applications, 2022, 32:6, 391–401

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© Steklov Math. Inst. of RAS, 2026