Theorem: Matroid.nonloop_iff_mem_compl_loops (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
⊢ M.Nonloop e ↔ e ∈ M.E \ M.cl ∅
Tactic:
rw [Nonloop, Loop, and_comm, mem_diff]
State after:
no goals