利用其中一个稳定过程将Rd上的P个a稳定过程相交局部时测度投影到其相交点集合上的这种方式,在相交集合点上定义一个自然测度l.在P(d—a)〈d且d≥2的条件下,证明了对任意的有界集U,事件l(U)〉a的概率随着a的增长将以指数速度衰减.
We equip the intersection of p independent symmtric a -stable processes in Ra with the natural measure l defined by projecting the intersection local time measure via one of the stable processes onto the set of intersection points. Under the assumption that p(d-- a) 〈 d and d ≥2, we show that as a → ∞ the probability of the event {l(U) 〉 a} decays with an exponential rate,where U is a bounded domain.