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The A3X J plus Jw plus twice dR sum has its certificate

Proved
CKLaneA3X.S_JJw2dR

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

a3xgeneral-courtade-kumartaylor-models

The exact original conditional source theorem: assuming the J plus Jw and twice dR enclosures, their sum has the original D_JJw2dR certificate. The original addition proof and all numerical conditions 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_second_chain

set_option maxHeartbeats 0
set_option maxRecDepth 100000
open CKLaneA3X
Formal statement
theorem CKLaneA3X.S_JJw2dR (G_JJw : Good F_JJw D_JJw) (G_tdR : Good F_tdR D_tdR) : Good F_JJw2dR D_JJw2dR := by sorry
Source
https://github.com/dpwoodru/general-courtade-kumar-lean/blob/04b6fc3f75b10c3c43702a883ddf888b0608a9a0/browse/CKLaneA3X/Step028.lean#L32

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