Theorem: Matroid.Circuit.nonloop_of_mem (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
hC : M.Circuit C
hC' : C.Nontrivial
he : e ∈ C
hL : M.Loop e
⊢ False
Tactic:
simp [hL.eq_of_circuit_mem hC he] at hC'
State after:
no goals