simpa [add_comm, mul_comm] using this h₂ h₁ (le_of_not_ge hy)
case inr
M : Type u_1
inst✝⁵ : Zero M
inst✝⁴ : One M
inst✝³ : Add M
inst✝² : Mul M
inst✝¹ : LT M
inst✝ : M ⊧ₘ* 𝐈𝚫₀
x₁ x₂ y₁ y₂ : M
h₁ : Exponential x₁ y₁
h₂ : Exponential x₂ y₂
this :
  ∀ {M : Type u_1} [inst : Zero M] [inst_1 : One M] [inst_2 : Add M] [inst_3 : Mul M] [inst_4 : LT M]
    [inst_5 : M ⊧ₘ* 𝐈𝚫₀] {x₁ x₂ y₁ y₂ : M},
    Exponential x₁ y₁ → Exponential x₂ y₂ → y₁ ≥ y₂ → Exponential (x₁ + x₂) (y₁ * y₂)
hy : ¬y₁ ≥ y₂
⊢ Exponential (x₁ + x₂) (y₁ * y₂)
no goals