other22 geometry final

Proved

Freiman.other22_geometry_final

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

algebracontinued-fractionsformalization

The two large tests and the incoming normalization of S give the final row1 cuts pulled back to the Z parameter coordinates.

Preamble

import Definitions.Def_Freiman_other22Verification
import Mathlib.Tactic.FinCases
import Mathlib.Tactic.SplitIfs

open Freiman

Formal statement

theorem Freiman.other22_geometry_final (Z B R S : LowerPair) (h : LowerOther22Geometry Z B R S) (k : Fin 6) (hc : lowerHistoryContextFits Z (other22Context k)) :
    lowerHistoryFinalEvent Z (other22Paths k) := by
  sorry

Source

Report §7.3, Lemma 7.4 (lem:old23-other22-target), printed p.43; other22_target.tex and Appendix other22_certificates.tex; original 144-obligation exact certificate.

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