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arXiv 1406.0885math.PR
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连续一致可积鞅的最大值、最小值和终值的联合分布

On joint distributions of the maximum, minimum and terminal value of a continuous uniformly integrable martingale

Alexander M. G. Cox, Jan Obłój

摘要:

研究了连续一致可积鞅及其最大值和最小值的联合律。特别地,我们给出了明确的鞅不等式,它提供了上界和下界的联合退出概率的鞅,其终端法律。此外,通过构造明确的和新颖的解决方案的Skorokhod嵌入问题,我们表明,这些界限是紧的。与Azéma & Yor,Perkins,Jacka和Cox & Objectiój的结果一起,这使我们能够完全确定所有可能的退出/不退出概率的上界和下界,服从给定的鞅终端律。此外,我们确定了这些边界的一些进一步的性质,被认为是最大值和最小值的函数。

英文摘要:

We study the joint laws of a continuous, uniformly integrable martingale, its maximum, and its minimum. In particular, we give explicit martingale inequalities which provide upper and lower bounds on the joint exit probabilities of a martingale, given its terminal law. Moreover, by constructing explicit and novel solutions to the Skorokhod embedding problem, we show that these bounds are tight. Together with previous results of Azéma & Yor, Perkins, Jacka and Cox & Obłój, this allows us to completely characterise the upper and lower bounds on all possible exit/no-exit probabilities, subject to a given terminal law of the martingale. In addition, we determine some further properties of these bounds, considered as functions of the maximum and minimum.

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。

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