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Q&A The derivatives of a function at a boundary point

posted 11mo ago by Snoopy‭ · edited 11mo ago by Snoopy‭

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#2: Post edited by $user avatar$ Snoopy‭ · 2024-01-17T01:12:45Z (11 months ago)

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Your question is better phrased and answered in Whitney's paper: [Analytic extensions of differentiable functions defined in closed sets](https://www.ams.org/journals/tran/1934-036-01/S0002-9947-1934-1501735-3/).
~~Here is excerpt from the introduction section of the paper, which can be seen from the given AMS link:~~
>![Image_alt_text](https://math.codidact.com/uploads/f21rp3tadji77f3sfz1lfrkhmlc8)

Your question is better phrased and answered in Whitney's paper: [Analytic extensions of differentiable functions defined in closed sets](https://www.ams.org/journals/tran/1934-036-01/S0002-9947-1934-1501735-3/).
Here is an excerpt from the introduction section of the paper, which can be seen from the given AMS link:
>![Image_alt_text](https://math.codidact.com/uploads/f21rp3tadji77f3sfz1lfrkhmlc8)

#1: Initial revision by $user avatar$ Snoopy‭ · 2024-01-17T01:09:13Z (11 months ago)

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Your question is better phrased and answered in Whitney's paper: [Analytic extensions of differentiable functions defined in closed sets](https://www.ams.org/journals/tran/1934-036-01/S0002-9947-1934-1501735-3/).

Here is excerpt from the introduction section of the paper, which can be seen from the given AMS link:
>![Image_alt_text](https://math.codidact.com/uploads/f21rp3tadji77f3sfz1lfrkhmlc8)

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