Abstract:
A subgroup $H$ of a group $G$ is called $\mathbb{P}$-subnormal in $G$ whenever either $H = G$ or there is a chain of subgroups $$H = H_0 \subset H_1 \subset \ldots \subset H_n = G$$ such that $|H_i:H_{i-1}|$ is a prime for every $i = 1, 2,\ldots, n$. We study the structure of a finite group $G$ all of whose Schmidt subgroups are $\mathbb{P}$-subnormal. The obtained results complement the answer to Problem 18.30 in the Kourovka Notebook.
The research of the first author was supported by the National Natural Science Foundation of China (grant no. 12371021). The research of the third author was supported by the Belarusian Republican Foundation for Fundamental Research (project no. $\Phi$23PH$\Phi$-237).
English version: Proceedings of the Steklov Institute of Mathematics (Supplement Issues), 2024, Volume 325, Issue 1, Pages S231–S238 DOI: https://doi.org/10.1134/S0081543824030179