List questions from manifolds

Published on 26 Mar 2026 - 21:27

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Quotient by a discrete subgroup of a Lie group

Published on 13 Apr 2026 - 16:10

90

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Lemma characterizing second fundamental form, do not understand step

Published on 04 Apr 2026 - 15:02

2.3k

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Every $\mathcal{C}^1$ manifold can be made smooth?

Published on 14 Apr 2026 - 16:49

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Reference request for stochastic processes on manifolds

Published on 17 Apr 2026 - 8:12

172

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Question about connections on the dual bundle.

Published on 13 Apr 2026 - 13:30

658

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Difference between Grassmann and Projective space?

Published on 11 Apr 2026 - 20:10

706

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Why is the image of the implicit function in the implicit function theorem not open?

Published on 28 Mar 2026 - 22:06

312

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Which homology groups of a closed orientable 6-manifold can be isomorphic to $\mathbb{Z}^3$?

Published on 12 Apr 2026 - 20:25

446

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What is the skew-symmetric part of the covariant derivative of a one-form?

Published on 28 Mar 2026 - 11:54

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Why is $\phi^* g = g$ a PDE for a pseudo-Riemannian metric $g$ on a manifold?

Published on 16 Apr 2026 - 19:27

187

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On computing the Differential of a Smooth Map

Published on 28 Apr 2026 - 15:30

59

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Why is a metric?

Published on 04 May 2026 - 8:50

386

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Derivative of map $f: S^n \to \mathbb{R}P^n$ is an isomorphism

Published on 16 Apr 2026 - 14:56

694

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compactification of $\Bbb R^n$

Published on 03 Apr 2026 - 11:31

List Question

Understanding Hempel's proof of uniqueness of cube with handles

Quotient by a discrete subgroup of a Lie group

Lemma characterizing second fundamental form, do not understand step

Every $\mathcal{C}^1$ manifold can be made smooth?

Reference request for stochastic processes on manifolds

Question about connections on the dual bundle.

Difference between Grassmann and Projective space?

Why is the image of the implicit function in the implicit function theorem not open?

Which homology groups of a closed orientable 6-manifold can be isomorphic to $\mathbb{Z}^3$?

What is the skew-symmetric part of the covariant derivative of a one-form?

Why is $\phi^* g = g$ a PDE for a pseudo-Riemannian metric $g$ on a manifold?

On computing the Differential of a Smooth Map

Why is a metric?

Derivative of map $f: S^n \to \mathbb{R}P^n$ is an isomorphism

compactification of $\Bbb R^n$

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