theorem proved term proof

`mobius_seventy`

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formal statement (Lean)

1116theorem mobius_seventy : mobius 70 = -1 := by native_decide

Term-mode proof.

1117
1118/-- μ(105) = -1 (squarefree with 3 prime factors). -/

Lean names referenced from this declaration's body.

mobius in IndisputableMonolith.NumberTheory.Primes.ArithmeticFunctions decl_use