Theorem: Matroid.Minor.of_dual (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 : Set α
M₀ M₁ M₂ : Matroid α
h : N✶ ≤m M✶
⊢ N ≤m M
Tactic:
simpa using h.dual
State after:
no goals