Theorems · Theorem · global analysis

hasFDerivAt_iff_isLittleO_nhds_zero

∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_2} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {F : Type u_3} [inst_3 : NormedAddCommGroup F] [inst_4 : NormedSpace 𝕜 F] {f : E → F}
  {f' : E →L[𝕜] F} {x : E}, HasFDerivAt f f' x ↔ (fun h => f (x + h) - f x - f' h) =o[nhds 0] fun h => h

Defined in

Mathlib.Analysis.Calculus.FDeriv.Basic

Cited by

7 results in Mathlib

Foundations

Depth 166 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

NontriviallyNormedFieldNormedAddCommGroupNormedSpaceNormedAddCommGroupNormedSpace