List questions from differential-topology

Published on 09 Apr 2026 - 4:56

57

Views

Find the points of minimum and maximum curvature

Published on 27 Mar 2026 - 13:19

46

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The existence of global continuous frame implies the existence of global smooth frame

Published on 01 Apr 2026 - 5:12

118

Views

A question related to frame bundle of a vector bundle

Published on 26 Mar 2026 - 16:26

74

Views

Relation between the first Pontryagin class $p_1$ and the first Stiefel Whitney class $w_1$ as a tangential structure of manifold M

Published on 12 Apr 2026 - 23:58

60

Views

$f,g$ are real-valued, $f(x,y)=g(h_1(x),h_2(y))$, $f,h_i$ are continuous, $g$ is increasing, does $g$ must be continuous?

Published on 28 Nov 2023 - 21:58

59

Views

Curvature of the curve on the unit sphere if torsion is always 1.

Published on 29 Mar 2026 - 16:03

101

Views

Index of a vector field on the unit sphere

Published on 12 Apr 2026 - 4:36

36

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Differential of a map $\Gamma : M \times N \to P$

Published on 28 Mar 2026 - 12:14

146

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A question on the manifold $ \{n\otimes n-m\otimes m:n,m\in S^2,(n,m)=0\} $.

Published on 29 Mar 2026 - 16:00

73

Views

Canonical chart for parallelizable manifold

Published on 01 Apr 2026 - 6:25

118

Views

Hopf's proof of the Turning Tangents Theorem in "Differential Geometry in the Large"

Published on 02 Dec 2023 - 0:31

75

Views

Definition of smooth action

Published on 09 Apr 2026 - 8:51

154

Views

Is the subset of symmetric $ 3\times 3 $ matrices with given eigenvalues a manifold?

Published on 12 Apr 2026 - 5:36

84

Views

Tangent map vs. differential on manifolds

Published on 13 Apr 2026 - 0:16

List Question

Homeomorphisms as a subset

Find the points of minimum and maximum curvature

The existence of global continuous frame implies the existence of global smooth frame

A question related to frame bundle of a vector bundle

Relation between the first Pontryagin class $p_1$ and the first Stiefel Whitney class $w_1$ as a tangential structure of manifold M

$f,g$ are real-valued, $f(x,y)=g(h_1(x),h_2(y))$, $f,h_i$ are continuous, $g$ is increasing, does $g$ must be continuous?

Curvature of the curve on the unit sphere if torsion is always 1.

Index of a vector field on the unit sphere

Differential of a map $\Gamma : M \times N \to P$

A question on the manifold $ \{n\otimes n-m\otimes m:n,m\in S^2,(n,m)=0\} $.

Canonical chart for parallelizable manifold

Hopf's proof of the Turning Tangents Theorem in "Differential Geometry in the Large"

Definition of smooth action

Is the subset of symmetric $ 3\times 3 $ matrices with given eigenvalues a manifold?

Tangent map vs. differential on manifolds

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