`BookProof.TensorCore.derPow_symm_tmul` (hA : SymmetricOn D₂ A) (n : ℕ) (ih : ∀ x y : ((domSpace Hs D₂).pow n), (inner ℂ (derPow Hs D₂ A n x) (inclPow Hs D₂ n y) : ℂ) = inner ℂ (in

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`BookProof.TensorCore.derPow_symm_tmul` (hA : SymmetricOn D₂ A) (n : ℕ) (ih : ∀ x y : ((domSpace Hs D₂).pow n), (inner ℂ (derPow Hs D₂ A n x) (inclPow Hs D₂ n y) : ℂ) = inner ℂ (in · Prove2Me