Lacunary recurrences and 2-adic properties of Eisenstein series

Fuente: arXiv
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Main Authors: Chiriac, Liubomir, Jorza, Andrei
Format: Preprint
Published: 2026
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author Chiriac, Liubomir
Jorza, Andrei
author_facet Chiriac, Liubomir
Jorza, Andrei
contents We study the rational coefficients that arise when the Eisenstein series $G_k$ is expressed as a polynomial in $G_4$ and $G_6$. We prove a recent conjecture giving an exact formula for the minimal 2-adic valuation of these coefficients in terms of the binary expansion of the weight. The proof uses lacunary recurrences for Eisenstein series.
format Preprint
id arxiv_https___arxiv_org_abs_2605_09738
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Lacunary recurrences and 2-adic properties of Eisenstein series
Chiriac, Liubomir
Jorza, Andrei
Number Theory
We study the rational coefficients that arise when the Eisenstein series $G_k$ is expressed as a polynomial in $G_4$ and $G_6$. We prove a recent conjecture giving an exact formula for the minimal 2-adic valuation of these coefficients in terms of the binary expansion of the weight. The proof uses lacunary recurrences for Eisenstein series.
title Lacunary recurrences and 2-adic properties of Eisenstein series
topic Number Theory
url https://arxiv.org/abs/2605.09738