Multiple Mertens theorems for arithmetic progressions

Fuente: arXiv
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Main Authors: Chen, Zhen, Luo, Junrong
Format: Preprint
Published: 2025
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author Chen, Zhen
Luo, Junrong
author_facet Chen, Zhen
Luo, Junrong
contents We establish asymptotic formulas for sums of reciprocals of primes in arithmetic progressions, generalizing recent results on multiple Mertens evaluations by Tenenbaum, Qi, and Hu. Specifically, for any fixed constant $K>0$, we derive asymptotic expansions for the sums $ \sum_{\substack{p_1\cdots p_n\leq x \\ p_i\equiv h_i \pmod{m_i} \\ i=1,\dots, n}}\frac{1}{p_1\cdots p_n} $ and the corresponding log-weighted sums. A key feature of our results is that the error terms hold \emph{uniformly} for moduli satisfying $m_i \le (\log x)^K$, a range accessible via the Siegel-Walfisz theorem. Furthermore, we identify the coefficients of the asymptotic expansion with the Taylor series of the reciprocal Gamma function, $1/Γ(z)$, providing a structural explanation for the lower-order terms.
format Preprint
id arxiv_https___arxiv_org_abs_2512_07336
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Multiple Mertens theorems for arithmetic progressions
Chen, Zhen
Luo, Junrong
Number Theory
11N05, 11N13, 11N37
We establish asymptotic formulas for sums of reciprocals of primes in arithmetic progressions, generalizing recent results on multiple Mertens evaluations by Tenenbaum, Qi, and Hu. Specifically, for any fixed constant $K>0$, we derive asymptotic expansions for the sums $ \sum_{\substack{p_1\cdots p_n\leq x \\ p_i\equiv h_i \pmod{m_i} \\ i=1,\dots, n}}\frac{1}{p_1\cdots p_n} $ and the corresponding log-weighted sums. A key feature of our results is that the error terms hold \emph{uniformly} for moduli satisfying $m_i \le (\log x)^K$, a range accessible via the Siegel-Walfisz theorem. Furthermore, we identify the coefficients of the asymptotic expansion with the Taylor series of the reciprocal Gamma function, $1/Γ(z)$, providing a structural explanation for the lower-order terms.
title Multiple Mertens theorems for arithmetic progressions
topic Number Theory
11N05, 11N13, 11N37
url https://arxiv.org/abs/2512.07336