Theorem: Matroid.Loop.eq_of_circuit_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
he : M.Loop e
hC : M.Circuit C
h : e ∈ C
⊢ C = {e}
Tactic:
rw [he.circuit.eq_of_subset_circuit hC (singleton_subset_iff.mpr h)]
State after:
no goals