几种停点的过去及亚强停点的性质

The Pasts of Several Kinds of Stopping Points and the Properties of the Sub-Strong Stopping Point

为了研究两指标随机过程的停止问题 ,Fouque引入了停点的过去 .探讨另外几种停点的过去 ,从而得到了亚强停点的 Fouque下确界仍是亚强停点 ,最后举

The pasts of several kinds of stopping points are studied. Some properties of the sub strong stopping point are got. For example: the Fouque infimum of two sub strong stopping points is still a sub strong stopping point.