`BookProof.ChapterA4f.massSq_nonneg` (m₁ m₂ : ℝ) : 0 ≤ m₁ ^ 2 + m₂ ^ 2

Proved

BookProof.ChapterA4f.massSq_nonneg

by leonardopedro · Oct 7, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterA4f.

BookProof.ChapterA4f.massSq_nonneg (m₁ m₂ : ℝ) : 0 ≤ m₁ ^ 2 + m₂ ^ 2

Formalization note: Lean 4 identifier BookProof.ChapterA4f.massSq_nonneg.

Preamble

-- Generated from ChapterA4f.lean — theorem BookProof.ChapterA4f.massSq_nonneg
import Definitions.Def_ChapterA3
import Definitions.Def_ChapterA5
import Mathlib
import Definitions.Def_ChapterA4f
open BookProof.ChapterA4f


open Matrix
open scoped ComplexConjugate


open BookProof.ChapterA3 BookProof.ChapterA5

Formal statement

theorem BookProof.ChapterA4f.massSq_nonneg (m₁ m₂ : ℝ) : 0 ≤ m₁ ^ 2 + m₂ ^ 2 := by sorry

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