Levy process;
Compound renewal process;
Distribution tails;
Heavy tails;
Long-tailed distributions;
Subexponential distributions;
Random walk;
PROBABILITIES;
ASYMPTOTICS;
SUPREMUM;
TIME;
D O I:
10.1016/j.spa.2017.07.013
中图分类号:
O21 [概率论与数理统计];
C8 [统计学];
学科分类号:
020208 ;
070103 ;
0714 ;
摘要:
We study subexponential tail asymptotics for the distribution of the maximum M-t := suP(u is an element of[0,t]) X-u of a process X-t with negative drift for the entire range of t > 0. We consider compound renewal processes with linear drift and Levy processes. For both processes we also formulate and prove the principle of a single big jump for their maxima. The class of compound renewal processes with drift particularly includes the Cramer-Lundberg renewal risk process. (C) 2017 Elsevier B.V. All rights reserved.