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def definition def or abbrev

IsBigOPower

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formal statement (Lean)

  26def IsBigOPower (f : ℝ → ℝ) (n : ℕ) : Prop :=

proof body

Definition body.

  27  IsBigO f (fun x => x ^ n) 0
  28
  29/-- f = o(x^n) as x → 0. -/

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