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theorem proved term proof

no_fourth_generation

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formal statement (Lean)

  59theorem no_fourth_generation :
  60    face_pairs 3 ≠ 4 := by

proof body

Term-mode proof.

  61  norm_num [face_pairs]
  62
  63/-- For D = 3, there cannot be 2 face-pairs. -/

used by (2)

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depends on (4)

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