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theorem proved term proof

no_fourth_generation

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formal statement (Lean)

 141theorem no_fourth_generation :
 142    List.length [Generation.first, Generation.second, Generation.third] ≠ 4 := by decide

proof body

Term-mode proof.

 143
 144/-! ## Mixing Between Generations -/
 145
 146/-- The CKM matrix elements encode how generations "talk" to each other.
 147    In RS, this comes from the overlap of 8-tick phases. -/

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depends on (16)

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