A Berry–Esseen theorem and Edgeworth expansions for uniformly elliptic inhomogeneous Markov chains
A Berry–Esseen theorem and Edgeworth expansions for uniformly elliptic inhomogeneous Markov chains
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均匀椭圆非齐次马尔可夫链的 Berry–Esseen 定理和 Edgeworth 展开
DOI:
10.1007/s00440-022-01177-2
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发表时间:
2023
影响因子:
2
通讯作者:
Hafouta, Yeor
中科院分区:
文献类型:
--
作者:
Dolgopyat, Dmitry;Hafouta, Yeor
We prove a Berry–Esseen theorem and Edgeworth expansions for partial sums of the form, whereis a uniformly elliptic inhomogeneous Markov chain andis a sequence of uniformly bounded functions. The Berry–Esseen theorem holds without additional assumptions, while expansions of order 1 hold whenis irreducible, which is an optimal condition. For higher order expansions, we then focus on two situations. The first is when the essential supremum ofis of orderfor some. In this case it turns out that expansions of any orderhold, and this condition is optimal. The second case is uniformly elliptic chains on a compact Riemannian manifold. Whenare uniformly Lipschitz continuous we show thatadmits expansions of all orders. Whenare uniformly Hölder continuous with some exponent, we show thatadmits expansions of all orders. For Hölder continues functions withour results are new also for uniformly elliptic homogeneous Markov chains and a single functional. In fact, we show that the conditionis optimal even in the homogeneous case.
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