"Almost'' universality of the Lerch zeta-function
Laurincikas, Antanas
Mathematical Communications, Tome 23 (2018) no. 2, p. 107-118 / Harvested from Mathematical Communications
The Lerch zeta-function $L(\lambda,\alpha,s)$ with transcendental parameter $\alpha$, or with rational parameters $\alpha$ and $\lambda$ is universal, i.e., a wide class of analytic functions is approximated by shifts $L(\lambda,\alpha,s+i\tau)$, $\tau \in \mathbb{R}$. The case of algebraic irrational $\alpha$ is an open problem. In the paper, it is proved that, for all parameters $\alpha$, $0<\alpha< 1$, and $\lambda$, $0<\lambda\leqslant 1$, including an algebraic irrational $\alpha$, there exists a closed non-empty set of analytic functions $F_{\alpha, \lambda}$ such that every function $f\in F_{\alpha, \lambda}$ can be approximated by shifts $L(\lambda,\alpha,s+i\tau)$.
Publié le : 2018-12-05
Classification:  Lerch zeta-function, support of probability measure, universality, weak convergence,  11M35
@article{mc2854,
     author = {Laurincikas, Antanas},
     title = {"Almost'' universality of the Lerch zeta-function},
     journal = {Mathematical Communications},
     volume = {23},
     number = {2},
     year = {2018},
     pages = { 107-118},
     language = {eng},
     url = {http://dml.mathdoc.fr/item/mc2854}
}
Laurincikas, Antanas. "Almost'' universality of the Lerch zeta-function. Mathematical Communications, Tome 23 (2018) no. 2, pp.  107-118. http://gdmltest.u-ga.fr/item/mc2854/