Abstract
A process Y n , n ≥ 1, satisfying the stochastic recurrent equation Y n = A n Y n−1 + B n , n ≥ 1, Y 0 ≥ 0, is studied in the paper; here (A n , B n ), n ≥ 1, are independent identically distributed pairs of nonnegative random variables. The cases when the values A n have a lognormal and log-Laplace distributions are considered. The tail index κ (for a stationary distribution) and the extremal index ϑ are studied. In the lognormal case, κ is determined and some useful properties of ϑ are established. In the log-Laplace case the both characteristics are obtained in explicit form.
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Original Russian Text © O.C. Novitskaya and E.B. Yatsalo, 2008, published in Vestnik Moskovskogo Universiteta, Matematika. Mekhanika, 2008, Vol. 63, No. 5, pp. 6–10.
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Novitskaya, O.C., Yatsalo, E.B. Extremal behavior of recurrent random sequences. Moscow Univ. Math. Bull. 63, 179–182 (2008). https://doi.org/10.3103/S0027132208050021
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DOI: https://doi.org/10.3103/S0027132208050021