weilinhy 发表于 2013-9-12 09:44 
谢谢 可能我这里表达有误
这里积分是同一个分数布朗运动
由于区间不想交
I am not familiar with fBM, but intuitively, since the main modification of fBM is removing the independence of the increment, even though the interval is not overlapped, this expectation cannot be zero.
best,