Question

Homeomorphisms which switch 2 points

score 142 · Answer 1 · 2026-04-10 16:43:07

142

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Homeomorphisms which switch 2 points

Published on 10 Apr 2026 - 16:43

score 61 · Answer 2 · 2026-04-12 03:36:29

61

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Closed subset of a metric space admits open subsets

Published on 12 Apr 2026 - 3:36

score 81 · Answer 3 · 2026-03-25 01:36:22

81

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Proving a Tychonoff Space $(T_{3.5})$ is finitely productive

Published on 25 Mar 2026 - 1:36

score 106 · Answer 4 · 2026-04-09 06:17:23

106

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General Stiefel-Whitney classes and Stiefel manifolds

Published on 09 Apr 2026 - 6:17

score 652 · Answer 5 · 2026-04-02 07:08:03

652

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Prove that if $A,B$ are closed then, $ \exists\;U,V$ open sets such that $U\cap V= \emptyset$

Published on 02 Apr 2026 - 7:08

score 106 · Answer 6 · 2018-08-09 01:57:41

106

Views

If $(X, \tau)$ is a topological space , then for any subset $S$ of $X$ ,$(S, \tau')$ will be a subspace.

Published on 09 Aug 2018 - 1:57

score 59 · Answer 7 · 2026-03-25 11:10:35

59

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From $\mathbb{R}^4$ to a topological sphere $S^2$

Published on 25 Mar 2026 - 11:10

score 1.4k · Answer 8 · 2026-04-12 18:25:45

1.4k

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Describe fibered product in Top

Published on 12 Apr 2026 - 18:25

score 126 · Answer 9 · 2018-08-09 07:40:20

126

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Homeomorphism that maps one ball to another

Published on 09 Aug 2018 - 7:40

score 54 · Answer 10 · 2026-04-08 18:06:09

54

Views

References for "Compactness Operator in set theory and topology" - why antispace is kind a topological space?

Published on 08 Apr 2026 - 18:06

score 666 · Answer 11 · 2026-04-12 14:44:38

666

Views

Help understanding the proof that $(C[0,1]), d_\infty$ is complete

Published on 12 Apr 2026 - 14:44

score 192 · Answer 12 · 2026-04-12 19:10:06

192

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If A is compact then is f(A) closed?

Published on 12 Apr 2026 - 19:10

score 2.7k · Answer 13 · 2026-04-10 01:25:54

2.7k

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Is the inverse of a continuous function an open map?

Published on 10 Apr 2026 - 1:25

score 286 · Answer 14 · 2026-04-05 23:28:30

286

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intersection of all neighborhoods of a point in zariski topology.

Published on 05 Apr 2026 - 23:28

score 1.7k · Answer 15 · 2026-04-02 07:06:08

1.7k

Views

Prove that if $A,B$ are closed and disjoint in a metric space, then they are contained in disjoint neighborhoods

Published on 02 Apr 2026 - 7:06

List Question

Homeomorphisms which switch 2 points

Closed subset of a metric space admits open subsets

Proving a Tychonoff Space $(T_{3.5})$ is finitely productive

General Stiefel-Whitney classes and Stiefel manifolds

Prove that if $A,B$ are closed then, $ \exists\;U,V$ open sets such that $U\cap V= \emptyset$

If $(X, \tau)$ is a topological space , then for any subset $S$ of $X$ ,$(S, \tau')$ will be a subspace.

From $\mathbb{R}^4$ to a topological sphere $S^2$

Describe fibered product in Top

Homeomorphism that maps one ball to another

References for "Compactness Operator in set theory and topology" - why antispace is kind a topological space?

Help understanding the proof that $(C[0,1]), d_\infty$ is complete

If A is compact then is f(A) closed?

Is the inverse of a continuous function an open map?

intersection of all neighborhoods of a point in zariski topology.

Prove that if $A,B$ are closed and disjoint in a metric space, then they are contained in disjoint neighborhoods

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