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arXiv 0705.0570math.PR
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分数布朗运动加权二次变差和加权三次变差的渐近性

Asymptotic behavior of weighted quadratic and cubic variations of fractional Brownian motion

Ivan Nourdin

摘要:

本文研究了分数阶布朗运动$B$的加权二次和三次重正化变分的收敛性,其Hurst指数为$H$ .在二次曲线(resp。立方)情况下,当$H<1/4$(分别$H<1/6$),我们通过Malliavin演算证明了$L^2$的收敛性,收敛于一个只依赖于$B$的显式极限.这个结果与著名的Breuer和Major定理相比有些令人惊讶。

英文摘要:

The present article is devoted to a fine study of the convergence of renormalized weighted quadratic and cubic variations of a fractional Brownian motion $B$ with Hurst index $H$. In the quadratic (resp. cubic) case, when $H<1/4$ (resp. $H<1/6$), we show by means of Malliavin calculus that the convergence holds in $L^2$ toward an explicit limit which only depends on $B$. This result is somewhat surprising when compared with the celebrated Breuer and Major theorem.

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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