On squares in Piatetski–Shapiro sequences
On squares in Piatetski–Shapiro sequences
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DOI:
10.4064/aa8644-8-2017
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发表时间:
2016-10
影响因子:
0.5
通讯作者:
Kui Liu;I. Shparlinski;Tianping Zhang
中科院分区:
文献类型:
--
作者:
Kui Liu;I. Shparlinski;Tianping Zhang
We study the distribution of squares in a Piatetski-Shapiro sequence $\left(\lfloor n^c\rfloor\right)_{n\in\mathbb N}$ with $c>1$ and $c\not\in\mathbb N$. We also study more general equations $\lfloor{n^c}\rfloor = sm^2$, $n,m\in \mathbb N$, $1\le n \le N$ for an integer $s$ and obtain several bounds on the number of solutions for a fixed $s$ and on average over $s$ in an interval. These results are based on various techniques chosen depending on the range of the parameters.