An infinite family of overpartition congruences mod powers of 2

Fuente: arXiv
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Autores principales: Shomanov, Zhumagali, Garvan, Frank
Formato: Preprint
Publicado: 2025
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author Shomanov, Zhumagali
Garvan, Frank
author_facet Shomanov, Zhumagali
Garvan, Frank
contents We prove an infinite family of Hecke-like congruences for the overpartition function modulo powers of 2. Starting from a recent identity of Garvan and Morrow and iterating Atkin's $U_2$ operator, we determine lower bounds on the 2-adic valuations of the coefficients that arise at each step. Our approach yields new modular equations relating the Hauptmoduln $G_2$ on $Γ_0(2)$ and $G_8$ on $Γ_0(8)$, together with explicit $U_2$-action formulas.
format Preprint
id arxiv_https___arxiv_org_abs_2510_20175
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle An infinite family of overpartition congruences mod powers of 2
Shomanov, Zhumagali
Garvan, Frank
Number Theory
11P83, 11F03
We prove an infinite family of Hecke-like congruences for the overpartition function modulo powers of 2. Starting from a recent identity of Garvan and Morrow and iterating Atkin's $U_2$ operator, we determine lower bounds on the 2-adic valuations of the coefficients that arise at each step. Our approach yields new modular equations relating the Hauptmoduln $G_2$ on $Γ_0(2)$ and $G_8$ on $Γ_0(8)$, together with explicit $U_2$-action formulas.
title An infinite family of overpartition congruences mod powers of 2
topic Number Theory
11P83, 11F03
url https://arxiv.org/abs/2510.20175