Freiman.lowerEarlyTerminal_ratio_range
ProvedFreiman.lowerEarlyTerminal_ratio_rangehall-raynumber-theory
Positive-digit continuant ratios lie in the closed unit interval, including the empty prefix.
Preamble
import Definitions.Def_Freiman_lowerEarlyTerminalGeometry open Freiman
Formal statement
theorem Freiman.lowerEarlyTerminal_ratio_range (w : List ℕ+) : 0 ≤ lowerRatio w ∧ lowerRatio w ≤ 1 := by sorry
Source
Freiman's Hall ray: Proof report and corrected English text (8 September 2026), pp.120–132, §§ s15:early-residual and s15:terminal-extension; pp.133–139, Proposition l139chain and Appendix app:l139cert.