Theorem: Matroid.Basis.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
h : M.Basis I X
⊢ X ⊆ M.cl I
Tactic:
rw [← cl_subset_cl_iff_subset_cl, h.cl_eq_cl]
State after:
no goals