List questions from geometric-topology

Published on 23 Feb 2026 - 8:42

110

Views

Cone and space homeomorphism question

Published on 20 Dec 2020 - 3:16

77

Views

Are There Catchy Names for Wallpaper Groups?

Published on 21 Dec 2020 - 19:27

358

Views

Realising the non-trivial orientable $S^2$-bundle over $T^2$ as a quotient of $S^2\times T^2$

Published on 30 Mar 2026 - 15:15

549

Views

Define operations of cutting and pasting in topology, formally.

Published on 26 Dec 2020 - 11:23

136

Views

Compact 3-manifold with compressible boundary tori?

Published on 27 Mar 2026 - 23:20

577

Views

Any two non-separating curves on a surface are equivalent

Published on 28 Mar 2026 - 16:21

67

Views

Double of a drilled out hyperbolic 3-manifold

Published on 27 Mar 2026 - 23:20

73

Views

Homeomorphism about gluing euclidean (hyperbolic, spherical) polygon

Published on 31 Dec 2020 - 6:43

116

Views

Question about poincare-Hopf theorem and trajectories of hamiltonian system

Published on 05 Jan 2021 - 4:25

121

Views

Is there a way of connecting manifolds together in a higher dimension?

Published on 06 Jan 2021 - 9:13

238

Views

Prove that $\pi_1(L(p,q))\cong\mathbb{Z}/p\mathbb{Z}$

Published on 06 Jan 2021 - 19:26

93

Views

Geometric intersection number

Published on 08 Jan 2021 - 15:17

172

Views

Connected sums where the separating "2"-sphere bounds a punctured ball

Published on 08 Jan 2021 - 17:44

32

Views

Analytic structure for pairs of manifold?

Published on 08 Jan 2021 - 22:19

List Question

What is the essence of ``the naturality of the cap product''?

Cone and space homeomorphism question

Are There Catchy Names for Wallpaper Groups?

Realising the non-trivial orientable $S^2$-bundle over $T^2$ as a quotient of $S^2\times T^2$

Define operations of cutting and pasting in topology, formally.

Compact 3-manifold with compressible boundary tori?

Any two non-separating curves on a surface are equivalent

Double of a drilled out hyperbolic 3-manifold

Homeomorphism about gluing euclidean (hyperbolic, spherical) polygon

Question about poincare-Hopf theorem and trajectories of hamiltonian system

Is there a way of connecting manifolds together in a higher dimension?

Prove that $\pi_1(L(p,q))\cong\mathbb{Z}/p\mathbb{Z}$

Geometric intersection number

Connected sums where the separating "2"-sphere bounds a punctured ball

Analytic structure for pairs of manifold?

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