theorem proved term proof

`not_two_generations`

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formal statement (Lean)

  64theorem not_two_generations :
  65    face_pairs 3 ≠ 2 := by

Term-mode proof.

  66  norm_num [face_pairs]
  67
  68end ParticleGenerations
  69end Foundation
  70end IndisputableMonolith

Lean names referenced from this declaration's body.