`BookProof.ChapterMajoranaFourier.nslash_sq` (n : Fin 3 → ℝ) (hn : ∑ i, (n i) ^ 2 = 1) : nslash n * nslash n = -1

Proved

BookProof.ChapterMajoranaFourier.nslash_sq

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

theoremstimepiece

Prove the following Lean 4 theorem from ChapterMajoranaFourier.

BookProof.ChapterMajoranaFourier.nslash_sq (n : Fin 3 → ℝ) (hn : ∑ i, (n i) ^ 2 = 1) : nslash n * nslash n = -1

Formalization note: Lean 4 identifier BookProof.ChapterMajoranaFourier.nslash_sq.

Preamble

-- Generated from ChapterMajoranaFourier.lean — theorem BookProof.ChapterMajoranaFourier.nslash_sq
import Mathlib
import Definitions.Def_ChapterMajoranaFourier
import Definitions.Def_ChapterA3
open BookProof.ChapterA3
open BookProof.ChapterMajoranaFourier


open Matrix


open BookProof.ChapterA3

Formal statement

theorem BookProof.ChapterMajoranaFourier.nslash_sq (n : Fin 3 → ℝ) (hn : ∑ i, (n i) ^ 2 = 1) :
    nslash n * nslash n = -1 := by sorry

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