have : k > j := compare_gt.mp ‹compare k j = Ordering.gt›
ℕ : Type
inst✝⁴ : Core ℕ
inst✝³ : Induction ℕ
inst✝² : Addition ℕ
inst✝¹ : Sign ℕ
order_inst : Order ℕ
inst✝ : Compare ℕ
ord : Ordering
n m k j : ℕ
x✝¹ : compare n m = Ordering.gt
x✝ : compare k j = Ordering.gt
this : n > m
⊢ compare (n + k) (m + j) = Ordering.gt
ℕ : Type
inst✝⁴ : Core ℕ
inst✝³ : Induction ℕ
inst✝² : Addition ℕ
inst✝¹ : Sign ℕ
order_inst : Order ℕ
inst✝ : Compare ℕ
ord : Ordering
n m k j : ℕ
x✝¹ : compare n m = Ordering.gt
x✝ : compare k j = Ordering.gt
this✝ : n > m
this : k > j
⊢ compare (n + k) (m + j) = Ordering.gt