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theorem proved term proof

zeta_isMultiplicative

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formal statement (Lean)

 231theorem zeta_isMultiplicative : ArithmeticFunction.IsMultiplicative zeta := by

proof body

Term-mode proof.

 232  simp only [zeta]
 233  exact ArithmeticFunction.isMultiplicative_zeta
 234
 235/-! ### Möbius inversion fundamentals -/
 236
 237/-- The key identity: μ * ζ = ε (the Dirichlet identity).
 238This is the foundation of Möbius inversion. -/

depends on (12)

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