Polarity for a Class of Levy Processes  

作　　者：Wu Chuan ju 1,2 , Liu Lu qin 1 1. School of Mathematics and Statistics, Wuhan University, Wuhan 430072, Hubei, China 2. College of Urban Construction, Wuhan University of Science and Technology, Wuhan 430070, Hubei, China 

出　　处：《Wuhan University Journal of Natural Sciences》2002年第4期394-398,共5页武汉大学学报（自然科学英文版）

摘　　要：Polar set of Markov processes is an important concept in probabilistic potential theory, but it is not easy to judge the polarity of the sets. In this paper, we give some results which can be easily used to examine the polarity of the sets whenX t belongs to a special class of Levy processes. We also give a result about polar functions of symmetric stable processes.Polar set of Markov processes is an important concept in probabilistic potential theory, but it is not easy to judge the polarity of the sets. In this paper, we give some results which can be easily used to examine the polarity of the sets whenX t belongs to a special class of Levy processes. We also give a result about polar functions of symmetric stable processes.

关 键 词：Levy process SUBORDINATOR (essentially) polar set polar function 

分 类 号：O211.6[理学—概率论与数理统计]