`BookProof.ChapterFreeFieldSphere.normalize_comm` (L : EuclideanSpace ℝ (Fin n) ≃ₗᵢ[ℝ] EuclideanSpace ℝ (Fin n)) (x : EuclideanSpace ℝ (Fin n)) : normalize (L x) = L (normalize x)

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`BookProof.ChapterFreeFieldSphere.normalize_comm` (L : EuclideanSpace ℝ (Fin n) ≃ₗᵢ[ℝ] EuclideanSpace ℝ (Fin n)) (x : EuclideanSpace ℝ (Fin n)) : normalize (L x) = L (normalize x) · Prove2Me