theorem extracted_formal_statement_14.{u_3, u_2, u_1} {E₁ : Type u_1} {E₂ : Type u_2} {F : Type u_3}
  [inst : NormedAddCommGroup E₁] [inst_1 : InnerProductSpace ℝ E₁] [inst_2 : FiniteDimensional ℝ E₁]
  [inst_3 : NormedAddCommGroup E₂] [inst_4 : InnerProductSpace ℝ E₂] [inst_5 : FiniteDimensional ℝ E₂]
  [inst_6 : NormedAddCommGroup F] [inst_7 : InnerProductSpace ℝ F] [inst_8 : FiniteDimensional ℝ F]
  {admm : ADMM E₁ E₂ F} {admm_kkt : Existance_of_kkt admm} (fullrank₁ : Function.Injective ⇑(OptProblem.A₁ E₂))
  (fullrank₂ : Function.Injective ⇑(OptProblem.A₂ E₁)) [inst_9 : Setting E₁ E₂ F admm (admm_kkt₁ fullrank₁ fullrank₂)]
  (hτ : ADMM.τ E₁ E₂ F > 0) (hτ' : ADMM.τ E₁ E₂ F ≥ 0)
  (h1 : ∀ (n : ℕ), 1 / ADMM.ρ E₁ E₂ F * Φ n = (ADMM.ρ E₁ E₂ F)⁻¹ * Φ n) (n : ℕ) :
  (ADMM.ρ E₁ E₂ F)⁻¹ * Φ n =
    (ADMM.ρ E₁ E₂ F)⁻¹ ^ 2 * (ADMM.τ E₁ E₂ F)⁻¹ * ‖ey n‖ ^ 2 + ‖(OptProblem.A₂ E₁) (e₂ n)‖ ^ 2 +
      ((1 - ADMM.τ E₁ E₂ F) ⊔ (1 - 1 / ADMM.τ E₁ E₂ F)) *
        ‖(OptProblem.A₁ E₂) (e₁ n) + (OptProblem.A₂ E₁) (e₂ n)‖ ^ 2 := sorry

State before:
E₁ : Type u_1
E₂ : Type u_2
F : Type u_3
inst✝⁹ : NormedAddCommGroup E₁
inst✝⁸ : InnerProductSpace ℝ E₁
inst✝⁷ : FiniteDimensional ℝ E₁
inst✝⁶ : NormedAddCommGroup E₂
inst✝⁵ : InnerProductSpace ℝ E₂
inst✝⁴ : FiniteDimensional ℝ E₂
inst✝³ : NormedAddCommGroup F
inst✝² : InnerProductSpace ℝ F
inst✝¹ : FiniteDimensional ℝ F
admm : ADMM E₁ E₂ F
admm_kkt : Existance_of_kkt admm
fullrank₁ : Function.Injective ⇑(OptProblem.A₁ E₂)
fullrank₂ : Function.Injective ⇑(OptProblem.A₂ E₁)
n✝ : ℕ
inst✝ : Setting E₁ E₂ F admm (admm_kkt₁ fullrank₁ fullrank₂)
hτ : ADMM.τ E₁ E₂ F > 0
hτ' : ADMM.τ E₁ E₂ F ≥ 0
h1 : ∀ (n : ℕ), 1 / ADMM.ρ E₁ E₂ F * Φ n = (ADMM.ρ E₁ E₂ F)⁻¹ * Φ n
n : ℕ
⊢ (ADMM.ρ E₁ E₂ F)⁻¹ * Φ n =
    (ADMM.ρ E₁ E₂ F)⁻¹ ^ 2 * (ADMM.τ E₁ E₂ F)⁻¹ * ‖ey n‖ ^ 2 + ‖(OptProblem.A₂ E₁) (e₂ n)‖ ^ 2 +
      ((1 - ADMM.τ E₁ E₂ F) ⊔ (1 - 1 / ADMM.τ E₁ E₂ F)) * ‖(OptProblem.A₁ E₂) (e₁ n) + (OptProblem.A₂ E₁) (e₂ n)‖ ^ 2

Tactic: simp [Φ, Ψ]
    ring_nf
    rw [mul_inv_cancel₀, one_mul, one_mul]
    ring_nf
    apply ne_of_gt (admm.hrho)

State after:

Relevant lemmas:
mul_inv_cancel₀ : ∀ {G₀ : Type u} [inst : GroupWithZero G₀] {a : G₀}, a ≠ 0 → a * a⁻¹ = 1
ne_of_gt : ∀ {α : Type u_1} [inst : Preorder α] {a b : α}, b < a → a ≠ b
one_mul : ∀ {M : Type u} [inst : MulOneClass M] (a : M), 1 * a = a