List questions from geometric-topology

Published on 12 Aug 2012 - 5:24

128

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Why can we consider only torus switch rather than arbitrary Dehn filling in Lickorish theorem?

Published on 27 Mar 2026 - 18:14

380

Views

Partitioning a triangulated 2-sphere into two triangulated discs

Published on 27 Mar 2026 - 0:02

435

Views

$\{(x,y)\!\in\!\mathbb{B}^n; -\varepsilon\leq-\|x\|^2\!+\!\|y\|^2\leq\varepsilon\}\approx\mathbb{B}^k\!\times\!\mathbb{B}^{n-k}$

Published on 27 Aug 2012 - 19:46

337

Views

Could a surface bundle over a circle have free fundamental group?

Published on 08 Sep 2012 - 14:18

200

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a question about connected sum

Published on 17 Sep 2012 - 19:10

418

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Simplified Jordan Curve Theorem for C^1 curves

Published on 19 Sep 2012 - 21:34

4.7k

Views

The Join of Two Copies of $S^1$

Published on 04 Apr 2026 - 3:31

63

Views

Nonhomeomorphic CW-complexes that are stably homeomorphic

Published on 25 Sep 2012 - 15:10

1.7k

Views

Homotopy Question Help?

Published on 28 Sep 2012 - 2:21

109

Views

ENR spaces which group of homeomorphisms is not locally contractable

Published on 03 Oct 2012 - 13:31

415

Views

line equidistant from two sets in the plane

Published on 09 Oct 2012 - 4:51

3.4k

Views

Embedding compact (boundaryless?) $n$-manifolds in $n$-dimensional real space

Published on 27 Mar 2026 - 18:08

186

Views

Gluing axiom of a TQFT

Published on 11 Oct 2012 - 3:25

678

Views

When are maps between topological manifolds automatically surjective?

Published on 11 Oct 2012 - 3:28

List Question

Given lattice G; parameters of torus R^2/G?

Why can we consider only torus switch rather than arbitrary Dehn filling in Lickorish theorem?

Partitioning a triangulated 2-sphere into two triangulated discs

$\{(x,y)\!\in\!\mathbb{B}^n; -\varepsilon\leq-\|x\|^2\!+\!\|y\|^2\leq\varepsilon\}\approx\mathbb{B}^k\!\times\!\mathbb{B}^{n-k}$

Could a surface bundle over a circle have free fundamental group?

a question about connected sum

Simplified Jordan Curve Theorem for C^1 curves

The Join of Two Copies of $S^1$

Nonhomeomorphic CW-complexes that are stably homeomorphic

Homotopy Question Help?

ENR spaces which group of homeomorphisms is not locally contractable

line equidistant from two sets in the plane

Embedding compact (boundaryless?) $n$-manifolds in $n$-dimensional real space

Gluing axiom of a TQFT

When are maps between topological manifolds automatically surjective?

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