Question

On definition of Gâteaux derivative

score 52 · Answer 1 · 2026-04-06 01:09:34

52

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On definition of Gâteaux derivative

Published on 06 Apr 2026 - 1:09

score 68 · Answer 2 · 2026-03-27 04:21:55

68

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An example of non simple group which is also a Lie group such that $G$ is a connected Lie group and has no non trivial normal Lie subgroup

Published on 27 Mar 2026 - 4:21

score 65 · Answer 3 · 2024-02-11 14:52:53

65

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Given a convergent sequence of complex numbers, is there a sequence of nested Jordan curves whose sum of members of $z_n$ in the regions converges?

Published on 11 Feb 2024 - 14:52

score 73 · Answer 4 · 2026-03-26 21:10:22

73

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Is there a Hamiltonian cycle of $m$ x $n$ rectangular lattice points (these are the vertices) in $\mathbb{R}^2$ such that no two edges are parallel?

Published on 26 Mar 2026 - 21:10

score 57 · Answer 5 · 2026-03-31 20:55:14

57

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Example to show that the containment $\overline {f^{-1}(B)} \subset f^{-1}(\bar B) $ is proper where $f$ is continuous mapping

Published on 31 Mar 2026 - 20:55

score 196 · Answer 6 · 2026-02-23 10:23:40

196

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Can $x\sin(x)$ be algebraic when it is not $0$?

Published on 23 Feb 2026 - 10:23

score 79 · Answer 7 · 2024-02-13 12:22:38

79

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Does every positive real sequence whose series converges to $a$ have a "straight line" convex subsequence that also converges to $a?$

Published on 13 Feb 2024 - 12:22

score 57 · Answer 8 · 2026-03-29 03:27:35

57

Views

Is there a monotone function that is not differentiable everywhere?

Published on 29 Mar 2026 - 3:27

score 156 · Answer 9 · 2024-02-15 17:13:29

156

Views

Find three non equivalent metrics on an infinite set.

Published on 15 Feb 2024 - 17:13

score 34 · Answer 10 · 2024-02-15 21:33:49

34

Views

Sequence in $\ell_p$ spaces

Published on 15 Feb 2024 - 21:33

score 31 · Answer 11 · 2024-02-16 13:02:34

31

Views

Example of a functor that creates limits but not strictly (other than equivalences)

Published on 16 Feb 2024 - 13:02

score 41 · Answer 12 · 2024-02-17 00:15:59

41

Views

Example for a particular function

Published on 17 Feb 2024 - 0:15

score 145 · Answer 13 · 2026-04-01 11:22:45

145

Views

Why isn't the third property in the definition of vector bundles redundant?

Published on 01 Apr 2026 - 11:22

score 192 · Answer 14 · 2024-02-18 12:42:41

192

Views

Using two copies of a decreasing $k$-tuple, can you form a convex decreasing $k$-tuple greater than the original sequence?

Published on 18 Feb 2024 - 12:42

score 279 · Answer 15 · 2026-03-30 16:30:03

279

Views

Can an infinite sum of non-computable numbers be computable, such that all finite sums of subsets of terms are non-computable?

Published on 30 Mar 2026 - 16:30

List Question

On definition of Gâteaux derivative

An example of non simple group which is also a Lie group such that $G$ is a connected Lie group and has no non trivial normal Lie subgroup

Given a convergent sequence of complex numbers, is there a sequence of nested Jordan curves whose sum of members of $z_n$ in the regions converges?

Is there a Hamiltonian cycle of $m$ x $n$ rectangular lattice points (these are the vertices) in $\mathbb{R}^2$ such that no two edges are parallel?

Example to show that the containment $\overline {f^{-1}(B)} \subset f^{-1}(\bar B) $ is proper where $f$ is continuous mapping

Can $x\sin(x)$ be algebraic when it is not $0$?

Does every positive real sequence whose series converges to $a$ have a "straight line" convex subsequence that also converges to $a?$

Is there a monotone function that is not differentiable everywhere?

Find three non equivalent metrics on an infinite set.

Sequence in $\ell_p$ spaces

Example of a functor that creates limits but not strictly (other than equivalences)

Example for a particular function

Why isn't the third property in the definition of vector bundles redundant?

Using two copies of a decreasing $k$-tuple, can you form a convex decreasing $k$-tuple greater than the original sequence?

Can an infinite sum of non-computable numbers be computable, such that all finite sums of subsets of terms are non-computable?

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