List questions from geometric-topology

Published on 25 Mar 2026 - 14:28

237

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questions about point set topology

Published on 13 Sep 2016 - 4:34

336

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What does it mean for a curve to be homotopic to a puncture?

Published on 23 Sep 2016 - 3:27

281

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Some questions about rigorous proof of cut and paste technique in constructing connected sum

Published on 25 Mar 2026 - 12:54

457

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realization of abelian groups as homology of simplicial complexes

Published on 27 Sep 2016 - 14:18

212

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Ambient Isotopy of Two Arcs in $\mathbb{R}^2$ with Common Endpoints in Rolfsen

Published on 27 Mar 2026 - 0:58

231

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3-manifold examples of homomorphisms between fundamental groups that are not induced by continuous maps

Published on 26 Mar 2026 - 21:26

65

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Heegaard splitting - $\pi_1(T) \to M$ is surjective

Published on 28 Sep 2016 - 18:35

129

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If $M_g$ is a genus $0$ surface, why are there no nonseparating curves?

Published on 01 Oct 2016 - 5:37

437

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Fundamental group of closed $3$-manifold and its subgroups.

Published on 28 Mar 2026 - 20:58

27

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Extending maps between surfaces to maps between handlebodies

Published on 07 Oct 2016 - 19:24

61

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Quasi-Metrics to Compare Finite Sets of Points

Published on 10 Oct 2016 - 16:39

113

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A $ G $-invariant product structure on the boundary of $ F \times \mathbb{S}^{1} $.

Published on 10 Oct 2016 - 19:34

587

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Homotopy class of maps between orientable surfaces

Published on 11 Oct 2016 - 3:25

127

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Self-contained proof that finite index subgroup in which $g$ is one element of a basis?

Published on 26 Mar 2026 - 19:02

List Question

Divisible elements in CAT(0) groups

questions about point set topology

What does it mean for a curve to be homotopic to a puncture?

Some questions about rigorous proof of cut and paste technique in constructing connected sum

realization of abelian groups as homology of simplicial complexes

Ambient Isotopy of Two Arcs in $\mathbb{R}^2$ with Common Endpoints in Rolfsen

3-manifold examples of homomorphisms between fundamental groups that are not induced by continuous maps

Heegaard splitting - $\pi_1(T) \to M$ is surjective

If $M_g$ is a genus $0$ surface, why are there no nonseparating curves?

Fundamental group of closed $3$-manifold and its subgroups.

Extending maps between surfaces to maps between handlebodies

Quasi-Metrics to Compare Finite Sets of Points

A $ G $-invariant product structure on the boundary of $ F \times \mathbb{S}^{1} $.

Homotopy class of maps between orientable surfaces

Self-contained proof that finite index subgroup in which $g$ is one element of a basis?

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