arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1105.2108math.PR
收藏

g_Γ期望下的最优停止

Optimal stopping under g_Γexpectation

Helin Wu

摘要:

本文解决了Peng,S.G.和Xu,M.Y. [8]的一项建议。我们的方法是基于我们以前关于g_Γ解的连续性的工作。在这种非线性期望下,严格比较定理一般不再成立,但我们仍然可以利用连续性来修正经典方法,求出最优停时。本文所用的理论主要是Bernard的单调极限定理和Peng S.G.的Doob-Meyer型非线性分解定理。[6]的文件。借助于这些有用的理论,也可以用一种新的方法代替下穿不等式得到价值过程的RCLL修正。

英文摘要:

In this paper, we solve the existence problem of optimal stopping problem under some kind of nonlinear expectation named g_Γexpectation which was recently introduced in Peng, S.G. and Xu, M.Y. [8]. Our method based on our preceding work on the continuous property of g_Γsolution. Generally, the strict comparison theorem does not hold under such nonlinear expectations any more, but we can still modify the classical method to find out an optimal stopping time via continuous property. The mainly used theory in our paper is the monotonic limit theorem of BSDE and nonlinear decomposition theorem of Doob-Meyer's type developed by Peng S.G. [6]. With help of these useful theories, a RCLL modification of the value process can also be obtained by a new approach instead of down-crossing inequality.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑