Strict differentiability
Summary
A function is strictly differentiable at a point when a single linear map approximates all its difference quotients near that point. Both points of each quotient can move. This is stronger than the Fréchet derivative condition, in which one of the two points stays fixed.
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Sources
- Web https://en.wikipedia.org/wiki/Strict_differentiability, Basic definition
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Definitions
- Strict differentiability 0146MBQNNE