On transcendence of non-periodic continued fractions associated with modular forms and arithmetic functions

Fuente: arXiv
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Autores principales: Chatterjee, Tapas, Mandal, Sagar
Formato: Preprint
Publicado: 2026
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author Chatterjee, Tapas
Mandal, Sagar
author_facet Chatterjee, Tapas
Mandal, Sagar
contents The purpose of this article is two-folds. Firstly, we establish two sufficient conditions under which the sequence $\{f(n)\pmod{m}: n\geq1\}$ is non-periodic, where $f(n)$ is an arithmetic function. As consequences, we deduce that the sequences associated with the Ramanujan tau function $τ(n)$ as well as the Fourier coefficients of certain normalized Eisenstein series $E_k(z)$ modulo $m$ are non-periodic. Further, we deduce that the sequence arising from Nathanson's totient function $Φ(n)$, the classical Euler's totient function $φ(n)$, sum of divisor function $σ(n)$, their Dirichlet convolution $σ*φ(n)$, Jordan's totient function $J_k(n)$, and unitary totient function $φ^*(n)$ modulo $m$, are non-periodic for certain modulo $m$. In addition, we extend a result of Ayad and Kihel \cite{r1} on the non-periodicity of certain arithmetic function $g(n)$. On the other hand, we construct several transcendental numbers arising from the continued fractions attached with $τ(n)$, $E_k(z)$, $Φ(n)$, $g(n)$, $φ(n)$, $σ(n)$, $σ*φ(n)$, $J_k(n)$, and $φ^*(n)$.
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id arxiv_https___arxiv_org_abs_2602_13300
institution arXiv
publishDate 2026
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spellingShingle On transcendence of non-periodic continued fractions associated with modular forms and arithmetic functions
Chatterjee, Tapas
Mandal, Sagar
General Mathematics
Primary: 11A25, 11F11, 40A15, 11J81, Secondary: 11A55, 11B50
The purpose of this article is two-folds. Firstly, we establish two sufficient conditions under which the sequence $\{f(n)\pmod{m}: n\geq1\}$ is non-periodic, where $f(n)$ is an arithmetic function. As consequences, we deduce that the sequences associated with the Ramanujan tau function $τ(n)$ as well as the Fourier coefficients of certain normalized Eisenstein series $E_k(z)$ modulo $m$ are non-periodic. Further, we deduce that the sequence arising from Nathanson's totient function $Φ(n)$, the classical Euler's totient function $φ(n)$, sum of divisor function $σ(n)$, their Dirichlet convolution $σ*φ(n)$, Jordan's totient function $J_k(n)$, and unitary totient function $φ^*(n)$ modulo $m$, are non-periodic for certain modulo $m$. In addition, we extend a result of Ayad and Kihel \cite{r1} on the non-periodicity of certain arithmetic function $g(n)$. On the other hand, we construct several transcendental numbers arising from the continued fractions attached with $τ(n)$, $E_k(z)$, $Φ(n)$, $g(n)$, $φ(n)$, $σ(n)$, $σ*φ(n)$, $J_k(n)$, and $φ^*(n)$.
title On transcendence of non-periodic continued fractions associated with modular forms and arithmetic functions
topic General Mathematics
Primary: 11A25, 11F11, 40A15, 11J81, Secondary: 11A55, 11B50
url https://arxiv.org/abs/2602.13300