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theorem proved wrapper

valence_difference

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formal statement (Lean)

 110theorem valence_difference :
 111    ledgerSkew majorThird - ledgerSkew minorThird = 5 / 60 := by

proof body

One-line wrapper that applies rw.

 112  rw [major_third_skew, minor_third_skew]; norm_num
 113

used by (1)

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depends on (8)

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