An Elementary Proof of Ramanujan's Identity for Odd Zeta Values
arXiv:2104.13223
Abstract
The main goal of this article is to present an elementary proof of Ramanujan's identity for odd zeta values. Our proof solely relies on a Mittag-Leffler type expansion for hyperbolic cotangent function and Euler's identity for even zeta values.
8 pages. To appear in The Journal of Classical Analysis, issue 1, volume 19, 2022