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`AIL6s` from the per-axis `A` program and the `GB` invariant (round six, `AIL6s_of_axis`)

Proved
J6Seg.AIL6s_of_axis

by xuanji · Oct 20, 2026 · Mathlib 0df444a (Lean v4.33.1)

complexity-theoryinteger-multiplicationkappa-improvement

AIL6s from the per-axis A program and the GB invariant.

The following holds (Lean statement, in the scope of module Solutions.J6LineTopA3):

theorem J6Seg.AIL6s_of_axis (P : Prm) (hP : P.Ok) (tab : Fin 1 → IStmt HS 1) (hX : AxisUA6 P tab)
    (hG : PipeGBA6 P) : AIL6s P tab

Context. A lines by an axis sweep, part 3: AIL6s_of_axis

The table is the machine's own procedures only (extL ext0 U body, J6LineTop4): the per-axis family U of AxisUA6 and, last, the sweep swp (sgm dS dA) dS dA (idx eX) with the descriptor on dS = 20. sweep_runF with pf = pipeA6 P n src D and the invariant "length ∏ t and GB (p + 2)" (PipeGBA6), then pipeA6_sweep, gives AIL6s P tab at cost (C_X + 10^12) cU6.

Formalization Note. Part of the Lean formalization of the round-six κ-improvement (integer-multiplication-kappa campaign, target IntMul.Kappa.jain_round6_framework). The statement is copied verbatim from the Lean development; the platform node carries the same declaration name. Definitions it mentions live in the IntMul_Kappa_R6_Defs* bundles (on top of the published κ bundles IntMul_Kappa_K_Defs*).

Preamble
-- Round-six κ development (integer-multiplication-kappa), generated by skeleton subtraction.

import Definitions.Def_IntMul_Kappa_R6_Defs63

set_option autoImplicit false
set_option relaxedAutoImplicit false
set_option maxHeartbeats 1000000

open J6Seg
open IntMul NLogN NLogN.KIL NLogN.KFB IntMul.Kappa.R6 Function
Formal statement
theorem J6Seg.AIL6s_of_axis (P : Prm) (hP : P.Ok) (tab : Fin 1 → IStmt HS 1) (hX : AxisUA6 P tab)
    (hG : PipeGBA6 P) : AIL6s P tab := by sorry
Source
S. Jain, round-six networks for the integer-multiplication κ-improvement campaign (https://github.com/Swapnil-jain/integer-mult-kappa, commit 5868dc7) and D. Colkitt, integer-mult-bounds (https://github.com/CrocSwap/integer-mult-bounds); target `IntMul.Kappa.jain_round6_framework`. Lean declaration `J6Seg.AIL6s_of_axis`, Solutions/J6LineTopA3.lean (lines 24–82) of the round-six development.

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