`BookProof.ChapterParityChirality.chi_sq` : chi * chi = 1

Proved

BookProof.ChapterParityChirality.chi_sq

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

theoremstimepiece

Prove the following Lean 4 theorem from ChapterParityChirality.

BookProof.ChapterParityChirality.chi_sq : chi * chi = 1

Formalization note: Lean 4 identifier BookProof.ChapterParityChirality.chi_sq.

Preamble

-- Generated from ChapterParityChirality.lean — theorem BookProof.ChapterParityChirality.chi_sq
import Definitions.Def_ChapterParity
import Mathlib
import Definitions.Def_ChapterParityChirality
import Definitions.Def_ChapterA3
import Definitions.Def_ChapterParitySU2
open BookProof.ChapterA3
open BookProof.ChapterParitySU2
open BookProof.ChapterParityChirality


open Matrix
open scoped Kronecker


open BookProof.ChapterA3
open BookProof.ChapterParity
open BookProof.ChapterParitySU2

Formal statement

theorem BookProof.ChapterParityChirality.chi_sq : chi * chi = 1 := by sorry

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