Local Times of Some Processes Associated with Fractional Bessel Processes

Local Times of Some Processes Associated with Fractional Bessel Processes
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与分数贝塞尔过程相关的一些过程的本地时间

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2007
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设BH=(B1H,B2H,...,BdH)是一个Hurst参数为0H1的d维分数布朗运动,RH=是分数Bessel过程.本文考虑由XH(t)=dBjH(s)给出的过程XH,得到了XH的局部时和Tanaka公式.作为推论,当d=1时,我们得到了分数布朗运动的加权局部时与过程XH的局部时之间的关系.
Let BH=(B1H,B2H,...,BdH)be a d-dimensional fractional Brownian motion with Hurst parameter 0H1 and let RH= be the fractional Bessel process.In this paper,we consider the process XH given by XH(t)=dBjH(s)and obtain the local time of XH and Tanaka formula.As a corollary,we get a relationship between the weighted local time of fractional Brownian motion and the local time of the process XH for d=1.