English
For n ≥ 2, rounding of ofNat(n) (the natural embedding into α) equals ofNat(n): round(ofNat(n)) = ofNat(n).
Русский
Для n ≥ 2 округление ofNat(n) (естественного в α) равно ofNat(n): round(ofNat(n)) = ofNat(n).
LaTeX
$$$\operatorname{round}(\operatorname{ofNat}(n)) = \operatorname{ofNat}(n) \quad (n \ge 2)$$$
Lean4
@[simp]
theorem round_ofNat (n : ℕ) [n.AtLeastTwo] : round (ofNat(n) : α) = ofNat(n) :=
round_natCast n