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arXiv 2102.02718math.PRmath.OCq-fin.MF
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关于鞅最优输运问题的稳定性:集值映射方法

On the stability of the martingale optimal transport problem: A set-valued map approach

Ariel Neufeld, Julian Sester

摘要:

实直线上鞅最优输运问题值的连续性。它的边缘最近在Backhoff-Veraguas和Pammer [2]和Wiglets [21]中建立。我们提出了一个新的视角,这一结果使用集值映射的理论。特别地,利用Beiglböck,Margheriti,Pammer [5]的结果,我们证明了具有固定边缘的鞅测度的集合是连续的,即,下半连续和上半连续,w.r.t.它的边缘。此外,我们建立了紧的优化集以及上半连续的优化w.r.t.边缘人

英文摘要:

Continuity of the value of the martingale optimal transport problem on the real line w.r.t. its marginals was recently established in Backhoff-Veraguas and Pammer [2] and Wiesel [21]. We present a new perspective of this result using the theory of set-valued maps. In particular, using results from Beiglböck, Jourdain, Margheriti, and Pammer [5], we show that the set of martingale measures with fixed marginals is continuous, i.e., lower- and upper hemicontinuous, w.r.t. its marginals. Moreover, we establish compactness of the set of optimizers as well as upper hemicontinuity of the optimizers w.r.t. the marginals.

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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