Does anyone know of any kind of functional equation (or closed form) for $\sum\limits_{n=1}^{\infty}\sinh(cn)^{-s}$, where $c$ is an arbitrary constant? I've been messing around with it off and on for a while now, but haven't been able to come up with anything particularly nice. Any ideas or references where such series are considered would be appreciated. Thank you in advance!
2026-03-28 16:21:24.1774714884
Functional equation for $\sum_{n=1}^{\infty} \sinh(cn)^{-s}$?
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