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arXiv 2102.06127math.NT
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一类无平方数集合的自然密度

The natural density of some sets of square-free numbers

Ron Brown

摘要:

设$P$和$T$是$T$有限的不相交素数集.给出了能被$T$中所有素数整除而不能被$P$中任何素数整除的无平方数集合的自然密度的一个简单公式。如果$P$是与$r$模$m$全等的素数集合(其中$m$和$r$是互素),则这个自然密度被证明是$0$。

英文摘要:

Let $P$ and $T$ be disjoint sets of prime numbers with $T$ finite. A simple formula is given for the natural density of the set of square-free numbers which are divisible by all of the primes in $T$ and by none of the primes in $P$. If $P$ is the set of primes congruent to $r$ modulo $m$ (where $m$ and $r$ are relatively prime numbers), then this natural density is shown to be $0$.

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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