List questions from differential-topology

Published on 14 Apr 2026 - 14:45

214

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Rigorous definition of an embedded connected sum.

Published on 08 Apr 2026 - 19:34

162

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Geometry of images of maps $f: \mathbb R \to \mathbb C$?

Published on 17 Apr 2026 - 12:33

44

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Homotopy of certain maps induced homotopies

Published on 11 Apr 2026 - 17:08

86

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Can the twisting of mobius band be represented by a U (1) bundle?

Published on 13 Apr 2026 - 14:50

69

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isotopy equivalence of maps

Published on 13 Apr 2026 - 17:33

306

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Exercise about differential forms and pull-back: $\omega_p=0$ if and only if $(\omega|_U)_p=0$

Published on 16 Apr 2026 - 5:19

145

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Is there a version of Whitney Embedding's theorem for infinite dimensional?

Published on 14 Apr 2026 - 12:19

5.9k

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Intuitively, what is the difference between homeomorphism and diffeomorphism? Significance?

Published on 11 Apr 2026 - 17:42

159

Views

Question on symplectic geometry

Published on 13 Apr 2026 - 20:19

3.2k

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Two definitions of conormal bundle

Published on 08 Apr 2026 - 0:36

229

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Degrees of maps $RP^{2n+1}\rightarrow RP^{2n+1}$

Published on 14 Apr 2026 - 15:51

1k

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$S^n$ is not a retract of the disk $D^{n+1}$ and Brouwer's Fixed Point Theorem.

Published on 15 Apr 2026 - 16:52

451

Views

Invariance of form under flow

Published on 11 Apr 2026 - 15:28

187

Views

Given two points in a manifold, can i find compact path-connected set that contains both

Published on 12 Apr 2026 - 12:57

List Question

Proving that a polilinear operator is differentiable

Rigorous definition of an embedded connected sum.

Geometry of images of maps $f: \mathbb R \to \mathbb C$?

Homotopy of certain maps induced homotopies

Can the twisting of mobius band be represented by a U (1) bundle?

isotopy equivalence of maps

Exercise about differential forms and pull-back: $\omega_p=0$ if and only if $(\omega|_U)_p=0$

Is there a version of Whitney Embedding's theorem for infinite dimensional?

Intuitively, what is the difference between homeomorphism and diffeomorphism? Significance?

Question on symplectic geometry

Two definitions of conormal bundle

Degrees of maps $RP^{2n+1}\rightarrow RP^{2n+1}$

$S^n$ is not a retract of the disk $D^{n+1}$ and Brouwer's Fixed Point Theorem.

Invariance of form under flow

Given two points in a manifold, can i find compact path-connected set that contains both

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