Representation of Ramanujan's tau function by twisted divisor functions

Fuente: arXiv
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Auteur principal: Ni, Tianyu
Format: Preprint
Publié: 2026
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author Ni, Tianyu
author_facet Ni, Tianyu
contents We present an infinite family of identities that represent Ramanujan's tau function in terms of convolution sums of twisted divisor functions. Our method involves explicitly constructing non-vanishing level $1$ cusp forms from modular forms of higher levels.
format Preprint
id arxiv_https___arxiv_org_abs_2604_13365
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Representation of Ramanujan's tau function by twisted divisor functions
Ni, Tianyu
Number Theory
11F11, 11A25
We present an infinite family of identities that represent Ramanujan's tau function in terms of convolution sums of twisted divisor functions. Our method involves explicitly constructing non-vanishing level $1$ cusp forms from modular forms of higher levels.
title Representation of Ramanujan's tau function by twisted divisor functions
topic Number Theory
11F11, 11A25
url https://arxiv.org/abs/2604.13365