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arXiv 2105.09565math.NT
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整数上具有大prime factor的随机乘性函数的几乎几乎必然上界

An almost sure upper bound for random multiplicative functions on integers with a large prime factor

Daniele Mastrostefano

摘要:

设$f$是Rademacher或Steinhaus随机乘法函数。让$\varepsilon>0$变小。我们证明,作为$x\rightarrow +\infty$,我们几乎肯定有$$\bigg|\sum_{\substack{n\leq x\\ P(n)>\sqrt{x}}}f(n)\bigg|\leq\sqrt{x}(\log\log x)^{1/4+\varepsilon},$$,其中$P(n)$代表$n$的最大素因子。这给出了$f$最大波动的几乎必然大小的指示。

英文摘要:

Let $f$ be a Rademacher or a Steinhaus random multiplicative function. Let $\varepsilon>0$ small. We prove that, as $x\rightarrow +\infty$, we almost surely have $$\bigg|\sum_{\substack{n\leq x\\ P(n)>\sqrt{x}}}f(n)\bigg|\leq\sqrt{x}(\log\log x)^{1/4+\varepsilon},$$ where $P(n)$ stands for the largest prime factor of $n$. This gives an indication of the almost sure size of the largest fluctuations of $f$.

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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