Theorem: Matroid.Hyperplane.flat_superset_eq_ground (Matroid/Flat.lean)

State before:
α : Type u_1
M : Matroid α
I F X Y F' F₀ F₁ F₂ P L H H₁ H₂ H' B C K : Set α
e f : α
hH : M.Hyperplane H
hF : M.Flat F
hHF : H ⊂ F
⊢ F = M.E
Tactic:
rw [← hF.cl, hH.cl_eq_ground_of_ssuperset hHF]
State after:
no goals