List questions from differential-topology

Published on 17 Apr 2026 - 11:24

1k

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Question about definition of a smooth manifolds (do all transition maps have to be smooth)?

Published on 12 Apr 2026 - 21:32

104

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Uniform Poincaré-Wirtinger constant for diffeomorphic domains?

Published on 13 Apr 2026 - 20:07

290

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Need help understanding proof about critical values of the determinant map.

Published on 10 Apr 2026 - 23:36

399

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Do we really need embedding for this?

Published on 14 Apr 2026 - 3:32

839

Views

Line with a knot in $\mathbb R^3$ isotopic to standard embedding $\mathbb R\subset \mathbb R^3$?

Published on 14 Apr 2026 - 2:48

673

Views

Reference for topology and fiber bundle

Published on 13 Apr 2026 - 23:46

79

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Topologies in the space $C^r(M,N)$

Published on 15 Apr 2026 - 15:16

720

Views

$Gr_2^+(\mathbb R^4) \cong S^2 \times S^2$

Published on 14 Apr 2026 - 11:21

99

Views

Embed connected sum of submanifolds in the ambient manifold

Published on 14 Apr 2026 - 17:48

173

Views

How does smoothness prevent "singularities"?

Published on 10 Apr 2026 - 0:10

339

Views

Fundamental Group!

Published on 08 Apr 2026 - 14:50

738

Views

$D^m\cup_h D^m$, joining $D^m \amalg D^m$ along the boundary $\partial D^m$

Published on 16 Apr 2026 - 22:39

500

Views

Identification of integration on smooth chains with ordinary integration

Published on 08 Apr 2026 - 23:25

1.1k

Views

Is the Empty set an orientable manifold?

Published on 17 Apr 2026 - 4:12

List Question

How do you imagine the shape of a manifold $S^2 \times S^1$?

Question about definition of a smooth manifolds (do all transition maps have to be smooth)?

Uniform Poincaré-Wirtinger constant for diffeomorphic domains?

Need help understanding proof about critical values of the determinant map.

Do we really need embedding for this?

Line with a knot in $\mathbb R^3$ isotopic to standard embedding $\mathbb R\subset \mathbb R^3$?

Reference for topology and fiber bundle

Topologies in the space $C^r(M,N)$

$Gr_2^+(\mathbb R^4) \cong S^2 \times S^2$

Embed connected sum of submanifolds in the ambient manifold

How does smoothness prevent "singularities"?

Fundamental Group!

$D^m\cup_h D^m$, joining $D^m \amalg D^m$ along the boundary $\partial D^m$

Identification of integration on smooth chains with ordinary integration

Is the Empty set an orientable manifold?

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