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def definition def or abbrev

eruptionRecurrenceCert

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formal statement (Lean)

 103def eruptionRecurrenceCert : EruptionRecurrenceCert where
 104  step_ratio_pos := vei_step_ratio_pos

proof body

Definition body.

 105  step_ratio_band := vei_step_ratio_band
 106  cumulative_pos := cumulative_ratio_pos
 107  cumulative_factors := cumulative_ratio_factors
 108  one_step_eq := cumulative_ratio_one_step
 109
 110/-- **ERUPTION RECURRENCE ONE-STATEMENT.** Adjacent-VEI eruption
 111recurrence ratios cluster at `φ² ∈ (2.59, 2.63)`; cumulative
 112recurrence across `k` VEI steps equals `φ^(2k) = (φ²)^k`. -/

depends on (6)

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