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arXiv 0810.1408math.PR
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具有任意Hurst参数的多维解析fbm的粗糙路径

The rough path associated to the multidimensional analytic fbm with any Hurst parameter

Samy Tindel, Jérémie Unterberger

摘要:

本文考虑复上半平面闭包上的复值d维分数布朗运动,称之为解析分数布朗运动.本文第二作者介绍了这一过程,它的实实轴和虚部都是通常的分数布朗运动。本文证明了对于(0,1/2)中的任意Hurst参数值,都可以构造出基于解析fBm的粗糙路径.这使得特别是解决微分方程驱动的这一进程在附近的0的复杂的上半平面,由于一个变种的通常的粗糙路径理论由于Gubinelli。

英文摘要:

In this paper, we consider a complex-valued d-dimensional fractional Brownian motion defined on the closure of the complex upper half-plane, called analytic fractional Brownian motion. This process has been introduced by the second author of the article, and both its real and imaginary parts, restricted on the real axis, are usual fractional Brownian motions. The current note is devoted to prove that a rough path based on the analytic fBm can be constructed for any value of the Hurst parameter in (0,1/2). This allows in particular to solve differential equations driven by this process in a neighborhood of 0 of the complex upper half-plane, thanks to a variant of the usual rough path theory due to Gubinelli.

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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