RICERCHE DI MATEMATICA, cilt.73, sa.4, ss.1725-1736, 2024 (SCI-Expanded)
In the present article we consider infinite locally finite perfect groups that are product of proper normal soluble subgroups of derived length at most n (Pi S-n-groups for short) for some fixed positive integer n and give structural results for these groups. Also we provide some consequences for certain locally finite minimal non-X-groups for some classes X and barely transitive groups in the context mentioned above. Furthermore, we define certain collections of groups and consider their intersection with Pi S-n. Finally, we investigate some groups which have non-trivial minimal non-FC epimorphic images.