Theorem: Matroid.freeOn_nonloop_iff (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 E : Set α
⊢ (freeOn E).Nonloop e ↔ e ∈ E
Tactic:
rw [← indep_singleton, freeOn_indep_iff, singleton_subset_iff]
State after:
no goals