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The probability of exceeding a high boundary on a random time interval for a heavy-tailed random walk

Sergey Foss, Zbigniew Palmowski, Stan Zachary

math.PRarXiv:math/0508461

Abstract

We study the asymptotic probability that a random walk with heavy-tailed increments crosses a high boundary on a random time interval. We use new techniques to extend results of Asmussen [Ann. Appl. Probab. 8 (1998) 354-374] to completely general stopping times, uniformity of convergence over all stopping times and a wide class of nonlinear boundaries. We also give some examples and counterexamples.

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