posted on 2025-05-10, 08:18authored byDavid Borwein, Jonathan M. Borwein
An intriguing log-cosine integral is fully analyzed and shown to have value a rational multiple of πζ (4), ζ being the Riemann zeta function. From this we deduce by means of generating functions and Parseval's identity the sums of certain series previously established by a completely different method.
First published in Proceedings of the American Mathematical Society in Vol. 123, No. 4, pp. 1191-1198, 1995 published by the American Mathematical Society.