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Freiman.lowerEarlyTerminal_fork_ranges

Proved
Freiman.lowerEarlyTerminal_fork_ranges

by tp · Sep 9, 2026 · Mathlib 0df444a (Lean v4.33.1)

hall-raynumber-theory

Check every ordinary and mixed virtual ratio interval of every actual interior label in the three source suffix classes. All intervals and their reflected intervals are disjoint except the two explicitly declared 22/32 cases.

Preamble
import Definitions.Def_Freiman_lowerEarlyTerminalGeometry

open Freiman
Formal statement
theorem Freiman.lowerEarlyTerminal_fork_ranges : lowerEarlyTerminalForkRangesValid := 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. The source lists in independent_residual.py, independent_extensions.py and verify_independent.py; exact finite table lowerEarlyTerminalForkCases generated from their native interior lists.

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