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theorem proved term proof

dirichletOne_ne_one

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formal statement (Lean)

 258theorem dirichletOne_ne_one {n : ℕ} (hn : n ≠ 1) : dirichletOne n = 0 := by

proof body

Term-mode proof.

 259  simp [dirichletOne, hn]
 260
 261/-! ### Additional multiplicativity lemmas -/
 262
 263/-- ω (number of distinct prime factors) is additive on coprimes: ω(mn) = ω(m) + ω(n). -/

depends on (10)

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