科研之友
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摘要
Let parallel to x parallel to denote the distance from x to the nearest integer. We show that for any irrational \alpha and for any tau < 8/23, there are infinitely many n which are the product of two primes for which parallel to n alpha parallel to <= n(-tau) We also show that for all sufficiently large b there exist 3-digit palindromes in base b with precisely two prime factors.
- 出版日期2014-4
