Аннотация:
In this article, we investigate the structure of a finite group $G$ under the assumption that some subgroups of $G$ are c-normal in $G$. The main theorem is as follows:
Theorem A.Let$E$be a normal finite group of$G$. If all subgroups of$E_{p}$with order$d_{p}$and 2$d_{p}$ (if$p=2$and$E_{p}$is not an abelian nor quaternion free 2-group) are c-normal in$G$, then$E$is$p$-hypercyclically embedded in$G$.
We give some applications of the theorem and generalize some known results.