Question

Given a $n-2$ dimensional closed submanifold of $\mathbb{R}^n$, is it the boundary of some $n-1$ dimensional submanifold?

score 34 · Answer 1 · 2018-06-01 10:43:24

34

Views

Given a $n-2$ dimensional closed submanifold of $\mathbb{R}^n$, is it the boundary of some $n-1$ dimensional submanifold?

Published on 01 Jun 2018 - 10:43

score 463 · Answer 2 · 2026-03-25 07:49:27

463

Views

Irreducible Hausdorff Topological Spaces

Published on 25 Mar 2026 - 7:49

score 330 · Answer 3 · 2026-03-22 22:33:59

330

Views

Homology/Cohomology Theories for Non-Locally Connected Spaces

Published on 22 Mar 2026 - 22:33

score 55 · Answer 4 · 2018-06-03 20:07:26

55

Views

Homotoping curves in 3/4-manifolds to lie on embedded tori?

Published on 03 Jun 2018 - 20:07

score 132 · Answer 5 · 2018-06-03 20:38:51

132

Views

Killing 2nd homology by including 3-manifold as the boundary of a 4-manifold

Published on 03 Jun 2018 - 20:38

score 1.8k · Answer 6 · 2018-06-13 23:06:50

1.8k

Views

Isotopy classes of embedded closed curves in a torus

Published on 13 Jun 2018 - 23:06

score 207 · Answer 7 · 2026-03-22 22:41:03

207

Views

Factorization of Products of Manifolds

Published on 22 Mar 2026 - 22:41

score 419 · Answer 8 · 2018-06-16 00:02:07

419

Views

Is every diffeomorphism of the n-torus isotopic to a linear one?

Published on 16 Jun 2018 - 0:02

score 109 · Answer 9 · 2018-06-17 05:17:30

109

Views

Decomposition of Matrix Representation of a Parallelizable Riemannian Metric

Published on 17 Jun 2018 - 5:17

score 193 · Answer 10 · 2026-03-25 06:41:36

193

Views

Understanding Corollaries of the h-cobordism theorem

Published on 25 Mar 2026 - 6:41

score 100 · Answer 11 · 2026-03-22 19:52:32

100

Views

On Bruhat - Tits building of $PGL_4(K)$

Published on 22 Mar 2026 - 19:52

score 88 · Answer 12 · 2026-03-25 08:59:32

88

Views

identifying a specific 3d manifold: A torus fibered over a circle with a $Z_2$ twist.

Published on 25 Mar 2026 - 8:59

score 171 · Answer 13 · 2018-06-25 22:43:13

171

Views

A naïve attempt at an elementary proof of Jordan-Brouwer separation theorem

Published on 25 Jun 2018 - 22:43

score 130 · Answer 14 · 2026-03-21 19:26:37

130

Views

$\mathbb{R}$ with co-countable topology is not a topological group

Published on 21 Mar 2026 - 19:26

score 30 · Answer 15 · 2018-06-28 05:38:39

30

Views

How do I detect the aberrations that prevent a smooth curve in the following image?

Published on 28 Jun 2018 - 5:38

List Question

Given a $n-2$ dimensional closed submanifold of $\mathbb{R}^n$, is it the boundary of some $n-1$ dimensional submanifold?

Irreducible Hausdorff Topological Spaces

Homology/Cohomology Theories for Non-Locally Connected Spaces

Homotoping curves in 3/4-manifolds to lie on embedded tori?

Killing 2nd homology by including 3-manifold as the boundary of a 4-manifold

Isotopy classes of embedded closed curves in a torus

Factorization of Products of Manifolds

Is every diffeomorphism of the n-torus isotopic to a linear one?

Decomposition of Matrix Representation of a Parallelizable Riemannian Metric

Understanding Corollaries of the h-cobordism theorem

On Bruhat - Tits building of $PGL_4(K)$

identifying a specific 3d manifold: A torus fibered over a circle with a $Z_2$ twist.

A naïve attempt at an elementary proof of Jordan-Brouwer separation theorem

$\mathbb{R}$ with co-countable topology is not a topological group

How do I detect the aberrations that prevent a smooth curve in the following image?

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