SIEVING AND THE ERDŐS–KAC THEOREM
SIEVING AND THE ERDŐS–KAC THEOREM
复制标题
筛选和 ErdŐS-KAC 定理
DOI:
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发表时间:
2007
期刊:
影响因子:
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通讯作者:
K. Soundararajan
中科院分区:
文献类型:
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作者:
A. Granville;K. Soundararajan
We give a relatively easy proof of the Erd ˝ os-Kac theorem via computing moments. We show how this proof extends naturally in a sieve theory context, and how it leads to several related results in the literature. Let!(n) denote the number of distinct prime factors of the natural number n. The average value of !(n) as n ranges over the integers below x is 1 x X n x !(n) = 1 x X p x X n x pjn 1 = 1 x X p x " x p # = 1 x X p x