Abstract : In an earlier paper (Part VII, with the same title as the present paper) we proved results on the lower bound for the number of zeros of generalised Dirichlet series $F(s)= \sum_{n=1}^{\infty} a_n\lambda^{-s}_n$ in regions of the type $\sigma\geq\frac{1}{2}-c/\log\log T$. In the present paper, the assumptions on the function $F(s)$ are more restrictive but the conclusions about the zeros are stronger in two respects: the lower bound for $\sigma$ can be taken closer to $\frac{1}{2}-C(\log\log T)^{\frac{3}{2}}(\log T)^{-\frac{1}{2}}$ and the lower bound for the number of zeros is something like $T/\log\log T$ instead of the earlier bound $>\!\!\!>T^{1-\varepsilon}$.
https://hal.archives-ouvertes.fr/hal-01104792 Contributor : Ariane RollandConnect in order to contact the contributor Submitted on : Thursday, January 22, 2015 - 9:24:10 AM Last modification on : Monday, March 28, 2022 - 8:14:08 AM Long-term archiving on: : Thursday, April 23, 2015 - 10:07:01 AM
R Balasubramanian, K Ramachandra. On the zeros of a class of generalised Dirichlet series-VIII. Hardy-Ramanujan Journal, Hardy-Ramanujan Society, 1991, Volume 14 - 1991, pp.21 - 33. ⟨10.46298/hrj.1991.122⟩. ⟨hal-01104792⟩