KMT coupling for random walk bridges
KMT coupling for random walk bridges
复制标题
用于随机游走桥的 KMT 耦合
DOI:
10.1007/s00440-021-01030-y
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发表时间:
2021
影响因子:
2
通讯作者:
Wu, Xuan
中科院分区:
文献类型:
--
作者:
Dimitrov, Evgeni;Wu, Xuan
In this paper we prove an analogue of the Komlós–Major–Tusnády (KMT) embedding theorem for random walk bridges. The random bridges we consider are constructed through random walks with i.i.d jumps that are conditioned on the locations of their endpoints. We prove that such bridges can be strongly coupled to Brownian bridges of appropriate variance when the jumps are either continuous or integer valued under some mild technical assumptions on the jump distributions. Our arguments follow a similar dyadic scheme to KMT’s original proof, but they require more refined estimates and stronger assumptions necessitated by the endpoint conditioning. In particular, our result does not follow from the KMT embedding theorem, which we illustrate via a counterexample.
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DOI:
10.24033/ast.1200
发表时间:
2019-12
期刊:
Astérisque
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
1984
影响因子:
1.1
作者:
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通讯作者:
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2007
期刊:
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通讯作者:
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发表时间:
1997
期刊:
Esaim: Probability and Statistics
影响因子:
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通讯作者:
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DOI:
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发表时间:
1972
期刊:
Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete
影响因子:
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通讯作者:
David G. Kostka