Characterization of P-groups By Sum of Element Orders

S. M. Jafarian Amiri, Mohsen Amiri

Let $G$ be a finite group. Then we denote $\psi (G)={\sum }_{x\in G}o(x)$ where $o(x)$ is the order of the element $x$ in $G$. In this paper we characterize some finite $p$-groups ($p$…