A trigonometric approach to an identity by Ramanujan
Number Theory
2026-03-10 v1
Abstract
An identity by Ramanujan is expressed using polar coordinates, so that its proof reduces to the verification of an elementary trigonometric identity. This approach produces a few variations on Ramanujan's original identity.
Keywords
Cite
@article{arxiv.2603.07793,
title = {A trigonometric approach to an identity by Ramanujan},
author = {C. Vignat},
journal= {arXiv preprint arXiv:2603.07793},
year = {2026}
}