Theorem: Matroid.Loop.dual_coloop (Matroid/Loop.lean)

State before:
α : Type u_1
β : Type u_2
M N : Matroid α
e f : α
B L L' I X Y Z F C K : Set α
he : M.Loop e
⊢ M✶.Coloop e
Tactic:
rwa [Coloop, dual_dual]
State after:
no goals