On the lowest zero of Dedekind zeta function

Let ${\zeta }_K(s)$ denote the Dedekind zeta-function associated to a number field $K$. In this paper, we give an effective upper bound for the height of first non-trivial zero other than $1\mathrm{/}2$ of ${\zeta }_K(s)$ under the generalized Riemann hypothesis. This is a refinement of the earlier bound obtained by Omar Sami.