On groups with formational subnormal strictly 2-maximal subgroups

• Date: 2021
• Main Authors: Monakhov, V. S., Konovalova , M. N., Монахов , V. S., Коновалова , М. М., Монахов , В. С.
• Format: Article
• Language: Ukrainian
• Published: Institute of Mathematics, NAS of Ukraine 2021
• Online Access: https://umj.imath.kiev.ua/index.php/umj/article/view/1115
• Journal Title: Ukrains’kyi Matematychnyi Zhurnal

UDC 512.542 Let $H$ be a subgroup of a finite group $G.$ If $G$ contains a maximal subgroup $M$ such that $H$ is a maximal subgroup in $M,$ then $H$ is called a $2$-maximal subgroup of $G.$ A subgroup $U$ of $G$ is said to be a strictly $2$-maximal subgroup in $G$ if $U$ is a $2$-maximal subgroup of...