Authors: Rusin Danilo Olegovich
We introduce and study the entire function $lambda(s) = sum_{n=1}^{infty} n^{s+1/2}/n^n$,defined by a Dirichlet-type series with super-exponential coefficients. We prove that$lambda(s)$ converges absolutely for all $s in mathbb{C}$, uniformly on compact sets,and is therefore an entire function of order zero. We establish a closed-form evaluationof the special value $lambda(-1/2) = int_0^1 x^{-x}, dx$, connecting $lambda$ to theclassical Sophomore's Dream identity of Bernoulli. We further prove that $lambda(s)$ isterm-by-term differentiable, with $lambda^{(k)}(s) = sum_{n=1}^{infty} (ln n)^k n^{s+1/2}/n^n$for all $k geq 0$, justified by the Weierstrass $M$-test. Finally, we propose a conjectureconnecting $lambda(s)$ to the Riemann zeta function.
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[v1] 2026-04-18 23:35:24
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