摘要

Consider a sequence of i.i.d. positive random variables. An universal result in almost sure limit theorem for products of sums of partial sums is established. We will show that the almost sure limit theorem holds under a fairly general condition on the weight d (k) = k (-1) exp(ln (beta) k), 0 a parts per thousand currency sign beta < 1. And in a sense, our results have reached the optimal form.