Improved estimates for the argument and zero-counting function of the Riemann zeta-function

Abstract

In this article, we improve the recent work of Hasanalizade, Shen, and Wong by establishing \[ \left| N (T) - \frac{T}{ 2 π} \log \left( \frac{T}{2πe}\right) \right|\le 0.10076\log T+0.24460\log\log T+8.08344, \] for every $T\ge e$, where $N(T)$ is the number of non-trivial zeros $\ddot{I}={\hat{I}}^2+i{\hat{I}}^3$, with $0<{\hat{I}}^3\le T$, of the Riemann zeta-function $\hat{I}\P (s)$. The main source of improvement comes from implementing new subconvexity bounds for $\hat{I}\P (\ddot{I}ƒ+it)$ on some $\ddot{I}{ƒ}_k$-lines inside the critical strip.

Accepted by Math. Comp. Appendix by Andrew Fiori