robinson.lean:23:8-23:17: warning: declaration uses `sorry`
robinson.lean:28:8-28:18: warning: declaration uses `sorry`
robinson.lean:33:4-33:12: warning: declaration uses `sorry`
robinson.lean:33:4-33:12: warning: declaration uses `sorry`
robinson.lean:33:0-47:30: warning: declaration uses `sorry`
robinson.lean:33:0-47:30: warning: declaration uses `sorry`
robinson.lean:49:11-49:15: warning: declaration uses `sorry`
robinson.lean:49:11-49:15: warning: declaration uses `sorry`
robinson.lean:49:11-49:15: warning: declaration uses `sorry`
robinson.lean:49:11-49:15: warning: declaration uses `sorry`
robinson.eq_1 (l₁ r₁ l₂ r₂ : Term) :
  robinson (l₁.Cons r₁) (l₂.Cons r₂) =
    match robinson l₁ l₂ with
    | ⟨none, h⟩ => ⟨none, sorry⟩
    | ⟨some f, h⟩ =>
      match robinson (act f r₁) (act f r₂) with
      | ⟨none, h⟩ => ⟨none, sorry⟩
      | ⟨some g, h⟩ => ⟨some (g ∘ f), sorry⟩
robinson.eq_2 (i : Nat) (l r : Term) : robinson (Term.Var i) (l.Cons r) = ⟨none, sorry⟩
robinson.eq_3 (l r : Term) (i : Nat) : robinson (l.Cons r) (Term.Var i) = ⟨none, sorry⟩
robinson.eq_4 (i j : Nat) :
  robinson (Term.Var i) (Term.Var j) = if i = j then ⟨some id, sorry⟩ else ⟨some fun n => if n = i then j else n, sorry⟩
robinson.lean:57:8-57:10: warning: declaration uses `sorry`