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The A3X qT product has its stored enclosure

Proved
CKLaneA3X.S_qT

by marwahaha · Sep 25, 2026 · Mathlib 0df444a (Lean v4.33.1)

a3xgeneral-courtade-kumartaylor-models

The exact original conditional source theorem: assuming Good F_q D_q and Good F_JJw2dR D_JJw2dR, the stored D_qT certificate encloses their product. The complete original analytic composition and every kernel-decided condition are retained.

Preamble
import Definitions.Def_A3X_numeric_core
import Definitions.Def_A3X_Step027_data_functions
import Definitions.Def_A3X_enclosure
import Definitions.Def_A3X_Step028_third_chain

set_option maxHeartbeats 0
set_option maxRecDepth 100000
open CKLaneA3X
Formal statement
theorem CKLaneA3X.S_qT (G_q : Good F_q D_q) (G_JJw2dR : Good F_JJw2dR D_JJw2dR) : Good F_qT D_qT := by sorry
Source
https://github.com/dpwoodru/general-courtade-kumar-lean/blob/04b6fc3f75b10c3c43702a883ddf888b0608a9a0/browse/CKLaneA3X/Step028.lean#L35

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