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theorem proved term proof

costSpectrumValue_one

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formal statement (Lean)

 135@[simp]
 136theorem costSpectrumValue_one : costSpectrumValue 1 = 0 := by

proof body

Term-mode proof.

 137  unfold costSpectrumValue
 138  simp [Nat.factorization_one]
 139

used by (3)

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depends on (1)

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