`BookProof.ChapterA3n.permMat_braiding` {N : ℕ} (σ : Equiv.Perm (Fin N)) (M : Fin N → Matrix (Fin 4) (Fin 4) ℂ) : permMat σ * tensorPow M = tensorPow (fun j => M (σ⁻¹ j)) * permMat

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`BookProof.ChapterA3n.permMat_braiding` {N : ℕ} (σ : Equiv.Perm (Fin N)) (M : Fin N → Matrix (Fin 4) (Fin 4) ℂ) : permMat σ * tensorPow M = tensorPow (fun j => M (σ⁻¹ j)) * permMat · Prove2Me