Sign changes of the partial sums of a random multiplicative function
Marco Aymone, Winston Heap, Jing Zhao·2021-03-09·via math.PR updates on arXiv.org
We provide a simple proof that the partial sums $\sum_{n\leq x}f(n)$ of a Rademacher random multiplicative function $f$ change sign infinitely often as $x\to\infty$, almost surely.