The Fourier coefficients and singular moduli of the elliptic modular function $j(τ)$, revisited

Fuente: arXiv
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Main Author: Matsusaka, Toshiki
Format: Preprint
Published: 2025
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author Matsusaka, Toshiki
author_facet Matsusaka, Toshiki
contents Kaneko's formula expresses the Fourier coefficients of the elliptic modular $j$-function as finite sums of singular moduli. First published as a short article in 1996, it was presented as a consequence of Zagier's work inspired by Borcherds products. Since then, the formula has developed into a broader framework that links the Fourier coefficients of modular forms to the special values of modular functions, extending in various directions. This article surveys these subsequent developments.
format Preprint
id arxiv_https___arxiv_org_abs_2507_21514
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The Fourier coefficients and singular moduli of the elliptic modular function $j(τ)$, revisited
Matsusaka, Toshiki
Number Theory
11F30, 11F37, 11F50
Kaneko's formula expresses the Fourier coefficients of the elliptic modular $j$-function as finite sums of singular moduli. First published as a short article in 1996, it was presented as a consequence of Zagier's work inspired by Borcherds products. Since then, the formula has developed into a broader framework that links the Fourier coefficients of modular forms to the special values of modular functions, extending in various directions. This article surveys these subsequent developments.
title The Fourier coefficients and singular moduli of the elliptic modular function $j(τ)$, revisited
topic Number Theory
11F30, 11F37, 11F50
url https://arxiv.org/abs/2507.21514