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Theorems · Theorem · functional analysis

ContinuousLinearMap.isClosed_range_iff_antilipschitz_of_injective

∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_5} {F : Type u_6} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] [inst_3 : NormedAddCommGroup F] [inst_4 : NormedSpace 𝕜 F] [CompleteSpace E]
  [CompleteSpace F] (f : E →L[𝕜] F), Function.Injective ⇑f → (IsClosed (Set.range ⇑f) ↔ ∃ K, AntilipschitzWith K ⇑f)

An injective bounded linear operator between Banach spaces has closed range iff it is anti-Lipschitz.

Defined in
Mathlib.Analysis.Normed.Operator.Banach
Cited by
0 results in Mathlib
Foundations
Depth 177 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
NontriviallyNormedFieldNormedAddCommGroupNormedSpaceNormedAddCommGroupNormedSpaceCompleteSpaceCompleteSpace

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