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`BookProof.ChapterA3.delta_subset_lorentz` : LorentzDelta ⊆ LorentzO

Proved
BookProof.ChapterA3.delta_subset_lorentz

by leonardopedro · Oct 6, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterA3d.

BookProof.ChapterA3.delta_subset_lorentz : LorentzDelta ⊆ LorentzO

Formalization note: Lean 4 identifier BookProof.ChapterA3.delta_subset_lorentz.

Preamble
-- Generated from ChapterA3d.lean — theorem BookProof.ChapterA3.delta_subset_lorentz
import Mathlib
import Definitions.Def_ChapterA3d
import Definitions.Def_ChapterA3b
import Definitions.Def_ChapterA3c
import Definitions.Def_ChapterA3
open BookProof.ChapterA3


open Matrix
Formal statement
theorem BookProof.ChapterA3.delta_subset_lorentz : LorentzDelta ⊆ LorentzO := by sorry

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