Kurdachenko, L.A.; Pypka, A.A.; Subbotin, I.Ya.
(Доповіді НАН України, 2019)
We investigate the influence of some natural types of subgroups on the structure of groups. A subgroup H of the group
G is called core-free if CoreG(H) = 〈1〉. We study the groups, in which every subgroup is either normal ...