Almost all hyperharmonic numbers are not integers
Almost all hyperharmonic numbers are not integers
复制标题
几乎所有的高调和数都不是整数
DOI:
10.1016/j.jnt.2016.07.023
复制
发表时间:
2017
期刊:
影响因子:
--
通讯作者:
D. C. Sertbas
中科院分区:
文献类型:
--
作者:
H. Göral;D. C. Sertbas
It is an open question asked by Mezö that there is no hyperharmonic integer except 1. So far it has been proved that all hyperharmonic numbers are not integers up to order r= 25. In this paper, we extend the current results for large orders. Our method will be based on three different approaches, namely analytic, combinatorial and algebraic. From analytic point of view, by exploiting primes in short intervals we prove that almost all hyperharmonic numbers are not integers. Then using combinatorial techniques, we show that if n is even or a prime power, or r is odd then the corresponding hyperharmonic number is not integer. Finally as algebraic methods, we relate the integerness property of hyperharmonic numbers with solutions of some polynomials in finite fields.
DOI:
--
发表时间:
1997-12
期刊:
--
影响因子:
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作者:
B. Berndt
通讯作者:
B. Berndt