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structure definition def or abbrev

CivilizationCyclesCert

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formal statement (Lean)

  37structure CivilizationCyclesCert where
  38  five_stages : Fintype.card CivilizationalStage = 5
  39  phi_ratio : ∀ k, cycleDuration (k + 1) / cycleDuration k = phi
  40

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