On $\CYRSH$-rigidity of groups of order $p^6$

Pradeep K. Rai, Manoj K. Yadav

Let $G$ be a group and $Ou{t}_c(G)$ be the group of its class-preserving outer automorphisms. We compute $|Ou{t}_c(G)|$ for all the group $G$ of order $p^6$, where $p$ is an odd prime.…