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chore(Algebra/Lie/Classical): remove an erw #38515

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chore(Algebra/Lie/Classical): remove an erw #38515

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3 changes: 2 additions & 1 deletion Mathlib/Algebra/Lie/Classical.lean
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Expand Up @@ -232,7 +232,8 @@ theorem soIndefiniteEquiv_apply {i : R} (hi : i * i = -1) (A : so' p q R) :
(soIndefiniteEquiv p q R hi A : Matrix (p ⊕ q) (p ⊕ q) R) =
(Pso p q R i)⁻¹ * (A : Matrix (p ⊕ q) (p ⊕ q) R) * Pso p q R i := by
rw [soIndefiniteEquiv, LieEquiv.trans_apply, LieEquiv.ofEq_apply]
erw [skewAdjointMatricesLieSubalgebraEquiv_apply]
simp only [so']
rw [skewAdjointMatricesLieSubalgebraEquiv_apply]

/-- A matrix defining a canonical even-rank symmetric bilinear form.

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