Question

What does "#" mean here? "[these structures] are diffeomorphic to $\#^kS^1\times B^3$"

score 88 · Answer 1 · 2021-03-10 09:53:50

88

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What does "#" mean here? "[these structures] are diffeomorphic to $\#^kS^1\times B^3$"

Published on 10 Mar 2021 - 9:53

score 52 · Answer 2 · 2026-03-28 16:28:20

52

Views

Can Ambient Isotopies be Deformed to be Constant Away from a Compact Set?

Published on 28 Mar 2026 - 16:28

score 315 · Answer 3 · 2026-03-24 07:31:26

315

Views

Why coorientable is a dual notion of orientable?

Published on 24 Mar 2026 - 7:31

score 40 · Answer 4 · 2021-03-12 15:21:47

40

Views

Determine if set is closed,open, bounded or compact

Published on 12 Mar 2021 - 15:21

score 332 · Answer 5 · 2021-03-15 12:11:18

332

Views

Why we take closed interval in defining curve in complex plane?

Published on 15 Mar 2021 - 12:11

score 98 · Answer 6 · 2021-03-16 15:58:34

98

Views

Homotop a homotopy-equivalence of $S_g$ to make the inverse image of an embedded circle to be a single circle

Published on 16 Mar 2021 - 15:58

score 874 · Answer 7 · 2021-03-17 19:10:13

874

Views

How do I find the interior, closure and boundary of an arbitrary set?

Published on 17 Mar 2021 - 19:10

score 107 · Answer 8 · 2021-03-18 03:54:28

107

Views

Quotient space of $\mathbb C^2 $ by identifying the scalar multiples is homeomorphic to 2 dimensional sphere

Published on 18 Mar 2021 - 3:54

score 353 · Answer 9 · 2026-03-25 15:41:16

353

Views

The 3-component hopf link covering the trefoil

Published on 25 Mar 2026 - 15:41

score 100 · Answer 10 · 2021-03-19 02:52:32

100

Views

A covering map is a homeomorphism

Published on 19 Mar 2021 - 2:52

score 69 · Answer 11 · 2021-03-21 00:09:53

69

Views

Can the infinite jungle gym surface be expressed by an exhaustion of compact surfaces with one boundary component?

Published on 21 Mar 2021 - 0:09

score 53 · Answer 12 · 2021-03-22 13:48:23

53

Views

How to calculate a rank of a map?

Published on 22 Mar 2021 - 13:48

score 43 · Answer 13 · 2021-03-23 15:38:35

43

Views

Example of an embedding $F$ with a given property

Published on 23 Mar 2021 - 15:38

score 95 · Answer 14 · 2026-03-29 03:52:42

95

Views

Signature of self-intersection submanifold

Published on 29 Mar 2026 - 3:52

score 317 · Answer 15 · 2026-04-04 03:21:40

317

Views

Local Contractibility of Homeomorphism Group of $\mathbb{R}^n$

Published on 04 Apr 2026 - 3:21

List Question

What does "#" mean here? "[these structures] are diffeomorphic to $\#^kS^1\times B^3$"

Can Ambient Isotopies be Deformed to be Constant Away from a Compact Set?

Why coorientable is a dual notion of orientable?

Determine if set is closed,open, bounded or compact

Why we take closed interval in defining curve in complex plane?

Homotop a homotopy-equivalence of $S_g$ to make the inverse image of an embedded circle to be a single circle

How do I find the interior, closure and boundary of an arbitrary set?

Quotient space of $\mathbb C^2 $ by identifying the scalar multiples is homeomorphic to 2 dimensional sphere

The 3-component hopf link covering the trefoil

A covering map is a homeomorphism

Can the infinite jungle gym surface be expressed by an exhaustion of compact surfaces with one boundary component?

How to calculate a rank of a map?

Example of an embedding $F$ with a given property

Signature of self-intersection submanifold

Local Contractibility of Homeomorphism Group of $\mathbb{R}^n$

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