Geodesic
On a sum involving certain arithmetic functions on Piatetski--Shapiro and Beatty sequences
Problemy analiza, Tome 12 (2023) no. 1, pp. 87-95.

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Let $c$, $\alpha$, $\beta \in \mathbb{R}$ be such that $1$, $\alpha>1$ is irrational and with bounded partial quotients, $\beta\in [0, \alpha)$. In this paper, we study asymptotic behaviour of the summations of the form $\displaystyle \sum\limits_{n\leq N}\frac{f(\lfloor n^c \rfloor)}{ \lfloor n^c \rfloor}$ and $\displaystyle \sum\limits_{n\leq N}\frac{f(\lfloor \alpha n+\beta \rfloor)}{\lfloor \alpha n+\beta \rfloor}$, where $f$ is the Euler totient function $\phi$, Dedekind function $\Psi$, sum-of-divisors function $\sigma$, or the alternating sum-of-divisors function $\sigma_{alt}$.
Keywords: arithmetic function, Beatty sequence, Piatetski–Shapiro sequence. 
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T. Srichan. On a sum involving certain arithmetic functions on Piatetski--Shapiro and Beatty sequences. Problemy analiza, Tome 12 (2023) no. 1, pp. 87-95. http://geodesic.mathdoc.fr/item/PA_2023_12_1_a5/

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