Theorem hasFDerivWithinAt_iff_isLittleO

Modification history

2026-02-18 03:15
Mathlib/Analysis/Calculus/FDeriv/Defs.lean
refactor(Analysis/Calculus): redefine `HasFDerivAtFilter` (#34965) …
Added hasFDerivWithinAt_iff_isLittleOView on Github →