Asymptotics of Markov Additive Chains on a Half-Plane: A Ratio Limit Theorem

Autor: Aziz Khanchi
Rok vydání: 2011
Předmět:
Zdroj: Journal of Theoretical Probability. 25:62-76
ISSN: 1572-9230
0894-9840
DOI: 10.1007/s10959-011-0384-1
Popis: Consider a Markov additive chain (V,Z) with a negative horizontal drift on a half-plane. We provide the limiting distribution of Z when V passes a threshold for the first time, as V tends to infinity. Our contribution is to allow the Markovian part of an associated twisted Markov chain to be null recurrent or transient. The positive recurrent case was treated by Kesten [Ann. Probab. 2 (1974), 355–386]. Moreover, a ratio limit will be established for a transition kernel with unbounded jumps.
Databáze: OpenAIRE