apply h_eq
case h.e'_4.h
ι : Type u_1
α : Type u_2
M : Matroid α
B I J X X' Y Y' F : Set α
Xs✝ Ys✝ Js Is : ι → Set α
i✝ j : ι
e f✝ : α
β : Type u_3
f : α → β
hf : InjOn f M.E
Xs : ι → Set β
x✝ : ∃ Ys, M.ModularFamily Ys ∧ ∀ (i : ι), Xs i = f '' Ys i
Ys : ι → Set α
hYs : M.ModularFamily Ys
h_eq : ∀ (i : ι), Xs i = f '' Ys i
i : ι
⊢ Xs i = f '' Ys i
no goals