rw [eq₃, eq₄]
case h_2.inr.h_2.inr
n✝ : ℕ
v₁ v₂ : Vector ℕ n✝
h✝¹ : algebra.Order.ble_lex_impl v₁ v₂ = true
m : ℕ
a b : Vector ℕ m
x : ℕ
xs : List ℕ
property✝⁴ : List.length (x :: xs) = m
y : ℕ
ys : List ℕ
property✝³ : List.length (y :: ys) = m
v₁✝¹ v₂✝¹ : Vector ℕ m
x✝¹ : ℕ
heq₁✝ : List ℕ
heq₂✝ : List.length (x✝¹ :: heq₁✝) = m
y✝¹ : ℕ
tail✝² : List ℕ
property✝² : List.length (y✝¹ :: tail✝²) = m
hneq₁ : ¬x✝¹ = y✝¹
v₁✝ v₂✝ : Vector ℕ m
x✝ : ℕ
tail✝¹ : List ℕ
property✝¹ : List.length (x✝ :: tail✝¹) = m
y✝ : ℕ
tail✝ : List ℕ
property✝ : List.length (y✝ :: tail✝) = m
h✝ : ¬(x✝ == y✝) = true
h : x✝ ≤ y✝
heq₁ : x = x✝¹ ∧ xs = heq₁✝
heq₂ : y = y✝¹ ∧ ys = tail✝²
heq₃ : x = x✝ ∧ xs = tail✝¹
heq₄ : y = y✝ ∧ ys = tail✝
eq₁ : x = x✝¹
eq₂ : y = y✝¹
eq₃ : x✝¹ = x✝
eq₄ : y✝¹ = y✝
⊢ x✝¹ ≤ y✝¹
case h_2.inr.h_2.inr
n✝ : ℕ
v₁ v₂ : Vector ℕ n✝
h✝¹ : algebra.Order.ble_lex_impl v₁ v₂ = true
m : ℕ
a b : Vector ℕ m
x : ℕ
xs : List ℕ
property✝⁴ : List.length (x :: xs) = m
y : ℕ
ys : List ℕ
property✝³ : List.length (y :: ys) = m
v₁✝¹ v₂✝¹ : Vector ℕ m
x✝¹ : ℕ
heq₁✝ : List ℕ
heq₂✝ : List.length (x✝¹ :: heq₁✝) = m
y✝¹ : ℕ
tail✝² : List ℕ
property✝² : List.length (y✝¹ :: tail✝²) = m
hneq₁ : ¬x✝¹ = y✝¹
v₁✝ v₂✝ : Vector ℕ m
x✝ : ℕ
tail✝¹ : List ℕ
property✝¹ : List.length (x✝ :: tail✝¹) = m
y✝ : ℕ
tail✝ : List ℕ
property✝ : List.length (y✝ :: tail✝) = m
h✝ : ¬(x✝ == y✝) = true
h : x✝ ≤ y✝
heq₁ : x = x✝¹ ∧ xs = heq₁✝
heq₂ : y = y✝¹ ∧ ys = tail✝²
heq₃ : x = x✝ ∧ xs = tail✝¹
heq₄ : y = y✝ ∧ ys = tail✝
eq₁ : x = x✝¹
eq₂ : y = y✝¹
eq₃ : x✝¹ = x✝
eq₄ : y✝¹ = y✝
⊢ x✝ ≤ y✝