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Sam Forster's user avatar
Sam Forster's user avatar
Sam Forster
  • Member for 6 years, 10 months
  • Last seen this week
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question
15
Does there exist a nowhere smooth function, that has arbitrary many derivatives?
Dec 1
answer
12
If a function $f$ is $(1+\varepsilon)$-times Lebesgue differentiable everywhere, is $f$ a constant function?
Sep 9, 2022
answer
9
Does there exist a nowhere smooth function, that has arbitrary many derivatives?
Dec 4
question
8
Can an Osgood curve be almost everywhere differentiable?
Jun 18, 2022
question
6
Does approximately Fréchet differentiable imply approximately Gateaux differentiable?
Sep 15, 2022
question
6
If degree $N$ polynomials always have a root, does there still exist an irreducible polynomial of degree $N+1$?
Aug 1, 2023
question
5
Do non-zero derivatives imply tangent lines (and vice versa)?
Oct 3, 2022
question
4
Can a halting oracle determine if a Turing machine is an ordinal?
Aug 30, 2023
question
3
Is (the generalised) Sard's theorem optimal?
Sep 18, 2022
question
3
Can the Banach-Tarski paradox or Tarski's circle-squaring problem be done with hinges?
Sep 24, 2022
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12
A unit speed differentiable curve which avoids a null set of directions
11
Is every "almost everywhere derivative" Henstock–Kurzweil integrable?
7
When is the complement of a disjoint countable union of compact sets connected?
7
If the magnitude of a root of an irreducible polynomial can be expressed via radicals, can the root?
7
If the slope of a secant is always irrational, is the function linear?