`BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef` {p : Fin 4 → ℝ} (hp0 : 0 ≤ p 0) (hmass : 0 ≤ p 0 ^ 2 - p 1 ^ 2 - p 2 ^ 2 - p 3 ^ 2) : (hermOfMom p).PosSemidef

Proved

BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef

by leonardopedro · Oct 10, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterWignerLittleGroupOrbits.

BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef {p : Fin 4 → ℝ} (hp0 : 0 ≤ p 0) (hmass : 0 ≤ p 0 ^ 2 - p 1 ^ 2 - p 2 ^ 2 - p 3 ^ 2) : (hermOfMom p).PosSemidef

Formalization note: Lean 4 identifier BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef.

Preamble

-- Generated from ChapterWignerLittleGroupOrbits.lean — theorem BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef
import Mathlib
import Definitions.Def_ChapterWignerLittleGroupOrbits
import Definitions.Def_ChapterWignerLittleGroup
open BookProof.ChapterWignerLittleGroup
open BookProof.ChapterWignerLittleGroupOrbits


open Matrix Complex
open scoped ComplexOrder


open BookProof.ChapterWignerLittleGroup

Formal statement

theorem BookProof.ChapterWignerLittleGroupOrbits.hermOfMom_posSemidef {p : Fin 4 → ℝ} (hp0 : 0 ≤ p 0)
    (hmass : 0 ≤ p 0 ^ 2 - p 1 ^ 2 - p 2 ^ 2 - p 3 ^ 2) :
    (hermOfMom p).PosSemidef := by sorry

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