∀ {α : Type u} (c : Batteries.RBColor) (parent : Batteries.RBNode.Path α) (v : α) (r : Batteries.RBNode α)
  (c_1 : Batteries.RBColor) (parent_1 : Batteries.RBNode.Path α) (v_1 : α) (r_1 : Batteries.RBNode α),
  (Batteries.RBNode.Path.left c parent v r = Batteries.RBNode.Path.left c_1 parent_1 v_1 r_1) =
    (c = c_1 ∧ parent = parent_1 ∧ v = v_1 ∧ r = r_1)