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arXiv 1705.02442math.NT
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无大prime factors数分布的显式估计

Explicit estimates for the distribution of numbers free of large prime factors

Jared D. Lichtman, Carl Pomerance

摘要:

有大量的文献讨论没有大素因子的数的渐近分布,即所谓的$\textit{smooth}$或$\textit{friable}$数。但是对于这种分布,我们所知甚少,这在数值上是明确的。在本文中,我们遵循希尔德布兰德和Tenenbaum的鞍点参数的一般计划,给出明确的和相当紧的区间,其中真正的计数。我们给出了我们的方法的两个数值例子,并与较大的一个,我们的间隔是如此之紧,我们可以排除著名的Dickman-de Bruijn渐近估计太小,Hildebrand-Tenenbaum主项太大。

英文摘要:

There is a large literature on the asymptotic distribution of numbers free of large prime factors, so-called $\textit{smooth}$ or $\textit{friable}$ numbers. But there is very little known about this distribution that is numerically explicit. In this paper we follow the general plan for the saddle point argument of Hildebrand and Tenenbaum, giving explicit and fairly tight intervals in which the true count lies. We give two numerical examples of our method, and with the larger one, our interval is so tight we can exclude the famous Dickman-de Bruijn asymptotic estimate as too small and the Hildebrand-Tenenbaum main term as too large.

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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