`BookProof.ChapterBijectionProbability.bijProb_le_one_div` (n : ℕ) (hn : 1 ≤ n) : bijProb n ≤ 1 / (n : ℝ)

Proved

BookProof.ChapterBijectionProbability.bijProb_le_one_div

by leonardopedro · Oct 7, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterBijectionProbability.

BookProof.ChapterBijectionProbability.bijProb_le_one_div (n : ℕ) (hn : 1 ≤ n) : bijProb n ≤ 1 / (n : ℝ)

Formalization note: Lean 4 identifier BookProof.ChapterBijectionProbability.bijProb_le_one_div.

Preamble

-- Generated from ChapterBijectionProbability.lean — theorem BookProof.ChapterBijectionProbability.bijProb_le_one_div
import Mathlib
import Definitions.Def_ChapterBijectionProbability
open BookProof.ChapterBijectionProbability


open scoped Nat
open Filter Asymptotics

Formal statement

theorem BookProof.ChapterBijectionProbability.bijProb_le_one_div (n : ℕ) (hn : 1 ≤ n) : bijProb n ≤ 1 / (n : ℝ) := by sorry

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