Theorem: Matroid.Indep.base_iff_ground_subset_cl (Matroid/Closure.lean)

State before:
α : Type u_1
ι : Type u_2
M : Matroid α
F I J X Y B C R : Set α
e f x y : α
hI : M.Indep I
h : M.Base I
⊢ M.E ⊆ M.cl I
Tactic:
rw [h.cl_eq]
State after:
no goals