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Theorems · Theorem · complex analysis

tendsto_zero_iff_meromorphicOrderAt_pos

∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {f : 𝕜 → E} {x : 𝕜},
  MeromorphicAt f x → (Filter.Tendsto f (nhdsWithin x {x}ᶜ) (nhds 0) ↔ 0 < meromorphicOrderAt f x)

A meromorphic function converges to zero iff its order is positive.

Defined in
Mathlib.Analysis.Meromorphic.Order
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Foundations
Depth 199 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
NontriviallyNormedFieldNormedAddCommGroupNormedSpace

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