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arXiv 1004.1071math.PR
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分数布朗运动何时不是有界变差的连续函数?

When does fractional Brownian motion not behave as a continuous function with bounded variation?

Ehsan Azmoodeh, Heikki Tikanmäki, Esko Valkeila

摘要:

如果我们将一个光滑函数g与Hurst指数H > 1/2的分数布朗运动B组合,则所得变量变换公式[或It/^o-公式]具有与分数布朗运动将是有界变差的连续函数相同的形式。本文证明了有界变差连续函数运行极大值的一个新的整表示公式。此外,我们表明,模拟分数布朗运动失败。

英文摘要:

If we compose a smooth function g with fractional Brownian motion B with Hurst index H > 1/2, then the resulting change of variables formula [or It/^o- formula] has the same form as if fractional Brownian motion would be a continuous function with bounded variation. In this note we prove a new integral representation formula for the running maximum of a continuous function with bounded variation. Moreover we show that the analogue to fractional Brownian motion fails.

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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