no goals
G : Type u_1
G'✝ : Type ?u.596430
inst✝³ : Group G
inst✝² : Group G'✝
A : Type ?u.596439
inst✝¹ : AddGroup A
N : Type ?u.596445
inst✝ : Group N
f : G →* N
G' : Subgroup G
H K : Subgroup { x // x ∈ G' }
⊢ Injective ↑(Subgroup.subtype G')
apply Subtype.coe_injective