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structure definition def or abbrev

EruptionRecurrenceCert

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formal statement (Lean)

  95structure EruptionRecurrenceCert where
  96  step_ratio_pos : 0 < vei_step_ratio
  97  step_ratio_band : 2.59 < vei_step_ratio ∧ vei_step_ratio < 2.63
  98  cumulative_pos : ∀ k : ℕ, 0 < cumulative_ratio k
  99  cumulative_factors : ∀ k : ℕ,
 100    cumulative_ratio k = vei_step_ratio ^ k
 101  one_step_eq : cumulative_ratio 1 = vei_step_ratio
 102

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