`BookProof.ChapterGaugeComprehensiveFixing.shift_smul_def` (n : Multiplicative ℤ) (x : ℝ) : n • x = ((Multiplicative.toAdd n : ℤ) : ℝ) + x

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`BookProof.ChapterGaugeComprehensiveFixing.shift_smul_def` (n : Multiplicative ℤ) (x : ℝ) : n • x = ((Multiplicative.toAdd n : ℤ) : ℝ) + x · Prove2Me