Update mathlib
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@@ -31,7 +31,7 @@ theorem CauchyRiemann₃ : (DifferentiableAt ℂ f z)
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have ContinuousLinearMap.comp_lineDeriv : ∀ w : ℂ, ∀ l : ℂ →L[ℝ] ℝ, lineDeriv ℝ (l ∘ f) z w = l ((fderiv ℝ f z) w) := by
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intro w l
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rw [DifferentiableAt.lineDeriv_eq_fderiv]
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rw [fderiv.comp]
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rw [fderiv_comp]
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simp
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fun_prop
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exact h.restrictScalars ℝ
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