List questions from differential-topology

Published on 07 Apr 2026 - 8:01

114

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Extending function using a vector field

Published on 09 Apr 2026 - 22:59

59

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How to prove the given sets are equal?

Published on 05 Nov 2015 - 5:40

1.2k

Views

Integral form of Euler characteristic

Published on 15 Apr 2026 - 0:45

115

Views

compute compactly supported cohomology of a space

Published on 05 Nov 2015 - 22:40

48

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Can every map between manifolds be factored as $p\circ i$

Published on 11 Apr 2026 - 8:51

324

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Proving that $I \times I$ is not a manifold

Published on 15 Apr 2026 - 2:53

196

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Flow of a vector field cannot reach a singular point in a finite amount of time?

Published on 13 Apr 2026 - 15:08

2.4k

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Compact manifold, regular value

Published on 07 Nov 2015 - 17:53

1.5k

Views

Map isotopic to identity is orientation preserving

Published on 24 Apr 2026 - 3:57

32

Views

Given a real matrix $W$, find a complex matrix $V$ such that $df_A(V) = W$ where $df_A: V \mapsto A\bar{V}^T + V\bar{A}^T, A\bar{A}^T = 1_{n\times n}$

Published on 13 Apr 2026 - 18:35

149

Views

Grammatically confused: $\omega=4dV$ for 3-form $\omega$ and volume in $\Bbb R^4$?

Published on 28 Mar 2026 - 11:34

731

Views

Immersed subgroup of a Lie group is a Lie group?

Published on 13 Apr 2026 - 20:58

387

Views

How to write differential forms on manifolds?

Published on 06 Apr 2026 - 5:37

1.1k

Views

Relations between covering map and (co-)homology groups

Published on 15 Apr 2026 - 10:42

List Question

Change of basis between coordinate charts in $\mathbb RP^2$.

Extending function using a vector field

How to prove the given sets are equal?

Integral form of Euler characteristic

compute compactly supported cohomology of a space

Can every map between manifolds be factored as $p\circ i$

Proving that $I \times I$ is not a manifold

Flow of a vector field cannot reach a singular point in a finite amount of time?

Compact manifold, regular value

Map isotopic to identity is orientation preserving

Given a real matrix $W$, find a complex matrix $V$ such that $df_A(V) = W$ where $df_A: V \mapsto A\bar{V}^T + V\bar{A}^T, A\bar{A}^T = 1_{n\times n}$

Grammatically confused: $\omega=4dV$ for 3-form $\omega$ and volume in $\Bbb R^4$?

Immersed subgroup of a Lie group is a Lie group?

How to write differential forms on manifolds?

Relations between covering map and (co-)homology groups

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