On the Hurwitz Zeta Function and Its Applications to Hyperbolic Probability Distributions

In this paper, we propose a new proof of the Jensen formula in 1895. We also derive some formulas similar to those in Pitman and Yor, 2003. Besides, a new formula of the generalized Bernoulli function is also derived. At the end of the paper, the probability density functions of sinh and tanh are studied briefly for general cases.