simp[trueArithWithStarUnbounded, models_iff]
c : ℕ
this✝⁵ : Structure Language.unit ℕ := modelStar c
this✝⁴ : Structure.Zero ℒₒᵣ⋆ ℕ
this✝³ : Structure.One ℒₒᵣ⋆ ℕ
this✝² : Structure.Add ℒₒᵣ⋆ ℕ
this✝¹ : Structure.Eq ℒₒᵣ⋆ ℕ
this✝ : Structure.LT ℒₒᵣ⋆ ℕ
this : ℕ ⊧ₘ* starUnbounded c
⊢ ℕ ⊧ₘ* trueArithWithStarUnbounded c
c : ℕ
this✝⁵ : Structure Language.unit ℕ := modelStar c
this✝⁴ : Structure.Zero ℒₒᵣ⋆ ℕ
this✝³ : Structure.One ℒₒᵣ⋆ ℕ
this✝² : Structure.Add ℒₒᵣ⋆ ℕ
this✝¹ : Structure.Eq ℒₒᵣ⋆ ℕ
this✝ : Structure.LT ℒₒᵣ⋆ ℕ
this : ℕ ⊧ₘ* starUnbounded c
⊢ (Structure.add ℒₒᵣ Language.unit ℕ).toStruc ⊧* starUnbounded c