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structure definition def or abbrev

NonlinearConvergenceCert

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formal statement (Lean)

 159structure NonlinearConvergenceCert where
 160  second_order : ∀ a : ℝ, 0 < a → a < 1 → (a/2)^2 = a^2/4
 161  error_goes_to_zero : ∀ C : ℝ, 0 < C →
 162    Filter.Tendsto (fun a => C * a ^ 2) (nhds 0) (nhds 0)
 163  kappa : rs_kappa = 8 * phi ^ 5
 164

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