List questions from geometric-topology

Published on 02 Dec 2012 - 17:57

451

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Manifold geometry and Non - Euclidean geometry

Published on 02 Dec 2012 - 21:20

80

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Homologous tori in 4-manifold

Published on 10 Dec 2012 - 20:33

446

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Relationship between the Hopf Fibration and Spinors on $S^2$

Published on 11 Dec 2012 - 2:00

1.4k

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Infinitely sheeted covering spaces!

Published on 11 Dec 2012 - 8:07

54

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Functionals defined on curves

Published on 01 Apr 2026 - 19:04

327

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Symmetric product of genus 2-surface

Published on 27 Mar 2026 - 19:53

7.6k

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Grothendieck 's question - any update?

Published on 28 Dec 2012 - 22:51

183

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$\operatorname{Spin}^c(n)$ is a Lie group?

Published on 27 Mar 2026 - 19:53

549

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Nontrivial h-cobordism

Published on 31 Dec 2012 - 14:42

278

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Problem from Hempel -- surfaces in Lens spaces

Published on 27 Mar 2026 - 19:52

136

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Properties of $S_2$ and the plane and $[−1,1]^2$

Published on 02 Jan 2013 - 21:23

313

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Homeomorphism between simply connected, closed 3 - manifold and 3-sphere.

Published on 11 Jan 2013 - 3:38

273

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How to proof M is a compact connected n-manifold,if for any point $p\in M,M\backslash\{p\}\cong R^n$ then M is homeomorphic to $S^n$.

Published on 20 Jan 2013 - 2:29

370

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Why does a circle cut a torus into an annulus?

Published on 22 Jan 2013 - 16:56

List Question

Orientability of Manifolds

Manifold geometry and Non - Euclidean geometry

Homologous tori in 4-manifold

Relationship between the Hopf Fibration and Spinors on $S^2$

Infinitely sheeted covering spaces!

Functionals defined on curves

Symmetric product of genus 2-surface

Grothendieck 's question - any update?

$\operatorname{Spin}^c(n)$ is a Lie group?

Nontrivial h-cobordism

Problem from Hempel -- surfaces in Lens spaces

Properties of $S_2$ and the plane and $[−1,1]^2$

Homeomorphism between simply connected, closed 3 - manifold and 3-sphere.

How to proof M is a compact connected n-manifold,if for any point $p\in M,M\backslash\{p\}\cong R^n$ then M is homeomorphic to $S^n$.

Why does a circle cut a torus into an annulus?

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