Ramanujan--Fine integrals for level 10

Fuente: arXiv
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Main Authors: Cooper, Shaun, Huber, Timothy, Opoku, Jeffery
Format: Preprint
Published: 2024
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author Cooper, Shaun
Huber, Timothy
Opoku, Jeffery
author_facet Cooper, Shaun
Huber, Timothy
Opoku, Jeffery
contents We investigate the question of when an eta quotient is a derivative of a formal power series with integer coefficients and present an analysis in the case of level 10. As a consequence, we establish and classify an infinite number of integral evaluations such as $$ \int_0^{e^{-2π/\sqrt{10}}} q\prod_{j=1}^\infty \frac{(1-q^j)^3(1-q^{10j})^8}{(1-q^{5j})^7} \text{d} q = \frac14\left(\sqrt{10-4\sqrt{5}}-1\right). $$ We describe how the results were found and give reasons for why it is reasonable to conjecture that the list is complete for level 10.
format Preprint
id arxiv_https___arxiv_org_abs_2410_19186
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Ramanujan--Fine integrals for level 10
Cooper, Shaun
Huber, Timothy
Opoku, Jeffery
Number Theory
11F11, 33E05
We investigate the question of when an eta quotient is a derivative of a formal power series with integer coefficients and present an analysis in the case of level 10. As a consequence, we establish and classify an infinite number of integral evaluations such as $$ \int_0^{e^{-2π/\sqrt{10}}} q\prod_{j=1}^\infty \frac{(1-q^j)^3(1-q^{10j})^8}{(1-q^{5j})^7} \text{d} q = \frac14\left(\sqrt{10-4\sqrt{5}}-1\right). $$ We describe how the results were found and give reasons for why it is reasonable to conjecture that the list is complete for level 10.
title Ramanujan--Fine integrals for level 10
topic Number Theory
11F11, 33E05
url https://arxiv.org/abs/2410.19186