Fitting classes of $\mathcal{L}_{1}$-groups, I
Fitting classes of $\mathcal{L}_{1}$-groups, I
If is a (S, D O }-closed subclass of 9al containing o" then a Fitting class of -groups (or a -Fitting class) is a subclass c of such that (F1) if G W and A is an ascendant subgroup of G, then A r,and G is generated by normal r-subgroups, …