no goals
α : Type u_1
inst✝ : AddGroupWithOne α
⊢ ↑↑0 = ↑0
rw [cast_zero, cast_zero, Int.cast_zero]
no goals
α : Type u_1
inst✝ : AddGroupWithOne α
p : PosNum
⊢ ↑↑(pos p) = ↑(pos p)
rw [cast_pos, cast_pos, PosNum.cast_to_int]
no goals
α : Type u_1
inst✝ : AddGroupWithOne α
p : PosNum
⊢ ↑↑(neg p) = ↑(neg p)
rw [cast_neg, cast_neg, Int.cast_neg, PosNum.cast_to_int]