Theorem: Matroid.delete_indep_iff (Matroid/Minor/Basic.lean)

State before:
α : Type u_1
M M' N : Matroid α
e f : α
I J R✝ B X Y Z K D D₁ D₂ R : Set α
⊢ (M ＼ D).Indep I ↔ M.Indep I ∧ Disjoint I D
Tactic:
rw [← restrict_compl, restrict_indep_iff, subset_diff, ← and_assoc,
  and_iff_left_of_imp Indep.subset_ground]
State after:
no goals