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arXiv 0911.2660math.NTmath.PR
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随机整数对的最大值GCD

Maximum GCD Among Pairs of Random Integers

R. W. R. Darling, E. E. Pyle

摘要:

修复$α>0$,并从$\{1,2,\ldots ,\lfloor e^{αN}\rfloor \}$中随机均匀采样$N$整数。给定$η>0$,成对GCD的最大值位于$N^{2-η}$和$N^{2+η}$之间的概率收敛于1,即$N\to \infty $。得到了更精确的估计。这是一个生日问题:两个随机整数可能共享某个$N^2/\log [N]$阶素因子。证明推广到任何算术半群的适当形式的素数定理是有效的。

英文摘要:

Fix $α>0$, and sample $N$ integers uniformly at random from $\{1,2,\ldots ,\lfloor e^{αN}\rfloor \}$. Given $η>0$, the probability that the maximum of the pairwise GCDs lies between $N^{2-η}$ and $N^{2+η}$ converges to 1 as $N\to \infty $. More precise estimates are obtained. This is a Birthday Problem: two of the random integers are likely to share some prime factor of order $N^2/\log [N]$. The proof generalizes to any arithmetical semigroup where a suitable form of the Prime Number Theorem is valid.

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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