Question

deformation retract from the standard $k$-cube to a nonempty, locally connected, closed, and contractible subset

score 134 · Answer 1 · 2017-12-30 03:50:30

134

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deformation retract from the standard $k$-cube to a nonempty, locally connected, closed, and contractible subset

Published on 30 Dec 2017 - 3:50

score 192 · Answer 2 · 2020-08-12 17:29:01

192

Views

Does retracting commute with taking quotients?

Published on 12 Aug 2020 - 17:29

score 94 · Answer 3 · 2020-08-18 18:22:31

94

Views

Continuity of an Unusual Deformation Retraction

Published on 18 Aug 2020 - 18:22

score 185 · Answer 4 · 2020-08-19 15:58:14

185

Views

Local Contractibility of CW Complexes

Published on 19 Aug 2020 - 15:58

score 304 · Answer 5 · 2020-09-30 08:49:11

304

Views

Prove that the unit circle cannot be a retract of $\mathbb{R}^2$-Munkres sec 35 exercise 4

Published on 30 Sep 2020 - 8:49

score 671 · Answer 6 · 2020-10-02 12:53:29

671

Views

Can we deform retract a torus to a circle?

Published on 02 Oct 2020 - 12:53

score 651 · Answer 7 · 2020-10-07 23:23:13

651

Views

Fundamental group of $S^1\vee S^1$ without applying seifert-van kampen's theorem

Published on 07 Oct 2020 - 23:23

score 229 · Answer 8 · 2020-10-29 17:15:26

229

Views

Retracting $\mathbb{R}^3$ minus a circle and a line to the torus.

Published on 29 Oct 2020 - 17:15

score 163 · Answer 9 · 2020-11-08 22:39:01

163

Views

How do I show three unit circles next to each other is homotopy equivalent to. bouquet of three circles?

Published on 08 Nov 2020 - 22:39

score 357 · Answer 10 · 2020-11-10 08:58:44

357

Views

Compact absolute retracts have the universal extension property. Where's the mistake in this proof?

Published on 10 Nov 2020 - 8:58

score 107 · Answer 11 · 2020-12-10 16:50:08

107

Views

Calculate Fundamental group of this sphere plus coordinate axis

Published on 10 Dec 2020 - 16:50

score 79 · Answer 12 · 2021-01-12 20:15:28

79

Views

Why isn't $\{\frac{1}{n}\}_{n \in \mathbb{N}} \cup \{0\}$ a neighborhood retract of any of its neighbourhoods?

Published on 12 Jan 2021 - 20:15

score 213 · Answer 13 · 2021-01-15 15:52:44

213

Views

In Euclidean Neighborhood Retracts, the neighborhood have the $\mathbb{R}^n$ topology?

Published on 15 Jan 2021 - 15:52

score 181 · Answer 14 · 2021-02-03 14:21:54

181

Views

How does the filled square retract to three of its boundary lines?

Published on 03 Feb 2021 - 14:21

score 164 · Answer 15 · 2021-02-08 16:22:22

164

Views

Strong deformation retraction between CW-complexes, Brown theorem proof

Published on 08 Feb 2021 - 16:22

List Question

deformation retract from the standard $k$-cube to a nonempty, locally connected, closed, and contractible subset

Does retracting commute with taking quotients?

Continuity of an Unusual Deformation Retraction

Local Contractibility of CW Complexes

Prove that the unit circle cannot be a retract of $\mathbb{R}^2$-Munkres sec 35 exercise 4

Can we deform retract a torus to a circle?

Fundamental group of $S^1\vee S^1$ without applying seifert-van kampen's theorem

Retracting $\mathbb{R}^3$ minus a circle and a line to the torus.

How do I show three unit circles next to each other is homotopy equivalent to. bouquet of three circles?

Compact absolute retracts have the universal extension property. Where's the mistake in this proof?

Calculate Fundamental group of this sphere plus coordinate axis

Why isn't $\{\frac{1}{n}\}_{n \in \mathbb{N}} \cup \{0\}$ a neighborhood retract of any of its neighbourhoods?

In Euclidean Neighborhood Retracts, the neighborhood have the $\mathbb{R}^n$ topology?

How does the filled square retract to three of its boundary lines?

Strong deformation retraction between CW-complexes, Brown theorem proof

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