α : Type u_1
inst✝ : LinearOrderedSemiring α
m n : PosNum
⊢ ¬↑n < ↑m ↔ m ≤ n
α : Type u_1
inst✝ : LinearOrderedSemiring α
m n : PosNum
⊢ ↑m ≤ ↑n ↔ m ≤ n
rw [← not_lt]
no goals
α : Type u_1
inst✝ : LinearOrderedSemiring α
m n : PosNum
⊢ ¬↑n < ↑m ↔ m ≤ n
exact not_congr cast_lt