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Initializing...
`BookProof.ChapterGammaCommutant.gamma_commutant_eq_scalars` : {X : Matrix (Fin 4) (Fin 4) ℂ | ∀ μ, X * mgamma μ = mgamma μ * X} = {X | ∃ c : ℂ, X = c • (1 : Matrix (Fin 4) (Fin 4) · Prove2Me