`BookProof.LorentzGroup.delta_subset_lorentz` : ∀ x ∈ Delta, IsLorentz x

Proved

BookProof.LorentzGroup.delta_subset_lorentz

by leonardopedro · Oct 9, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterLorentzGroup.

BookProof.LorentzGroup.delta_subset_lorentz : ∀ x ∈ Delta, IsLorentz x

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

Preamble

-- Generated from ChapterLorentzGroup.lean — theorem BookProof.LorentzGroup.delta_subset_lorentz
import Mathlib
import Definitions.Def_ChapterLorentzGroup
open BookProof.LorentzGroup



open Matrix

Formal statement

theorem BookProof.LorentzGroup.delta_subset_lorentz : ∀ x ∈ Delta, IsLorentz x := by sorry

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