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)
Lean names referenced from this declaration's body.