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An elementary proof of some Ramanujan-type identities

Year: 2025
Type: preprint
Abstract: We give an elementary proof of some identities that express the squares of Riemann zeta function at integer points in terms of the series involving hyperbolic functions, digamma function, Bernoulli numbers etc. In this version, inaccuracies in the text have been corrected and one of the bibliographic references has been updated.
Open Access status: green
OpenAlex ID: W7117561531
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