On the pronormality of subgroups of odd indices in finite simple symplectic groups

Anatoly S. Kondrat'ev, Natalia V. Maslova, Danila O. Revin

A subgroup $H$ of a group $G$ is said to be pronormal in $G$ if $H$ and $H^g$ are conjugate in $⟨H,H^g⟩$ for every element $g\in G$. In [Sib. Math. J. 2015. Vol. 56,…