Section InjmFrobenius.
Variables (gT rT : finGroupType) (D G : {group gT}) (f : {morphism D >-> rT}).
Implicit Types (H K : {group gT}) (sGD : G \subset D) (injf : 'injm f).

Theorem Frobenius_Ldiv (gT : finGroupType) (G : {group gT}) n :
n %| #|G| -> n %| #|'Ldiv_n(G)|.