Question

Hausdorff distance for compact sets

score 758 · Answer 1 · 2016-12-10 16:09:57

758

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Hausdorff distance for compact sets

Published on 10 Dec 2016 - 16:09

score 635 · Answer 2 · 2026-04-02 14:37:45

635

Views

Topology question. Which of the following subsets are open? closed? connected? Compact?

Published on 02 Apr 2026 - 14:37

score 49 · Answer 3 · 2016-12-14 16:17:53

49

Views

What open cover should i consider in order to show $(X,d)$ is not compact?

Published on 14 Dec 2016 - 16:17

score 1.6k · Answer 4 · 2026-04-02 11:37:27

1.6k

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Functions which are zero at infinity are closed subset of bounded functions (even then domain is not punctured)

Published on 02 Apr 2026 - 11:37

score 51 · Answer 5 · 2016-12-15 15:43:28

51

Views

An fallacious argument on recursive open cover for the interval [0, 1]

Published on 15 Dec 2016 - 15:43

score 387 · Answer 6 · 2016-12-15 19:50:24

387

Views

Limit-point compactness implies sequential compactness in metric spaces

Published on 15 Dec 2016 - 19:50

score 59 · Answer 7 · 2016-12-15 21:00:48

59

Views

Are nice spaces paracompact iff their connected components are?

Published on 15 Dec 2016 - 21:00

score 95 · Answer 8 · 2016-12-15 22:06:17

95

Views

$A$ closed, $B$ compact, both non-empty - counterexample in R to show that $d(A,B)$ NOT = $d(a,b)$?

Published on 15 Dec 2016 - 22:06

score 839 · Answer 9 · 2016-12-21 01:42:05

839

Views

How is it proved that if every infinite subset of $E$ has at least an accumulation point in $E$, then $E$ is compact?

Published on 21 Dec 2016 - 1:42

score 89 · Answer 10 · 2026-03-31 22:27:58

89

Views

Do we need the Axiome of Choice in proving a Sequentially Compact Metric Space is Totally Bounded?

Published on 31 Mar 2026 - 22:27

score 87 · Answer 11 · 2016-12-22 10:21:07

87

Views

To cover compact set with cobbles

Published on 22 Dec 2016 - 10:21

score 49 · Answer 12 · 2026-03-30 10:39:25

49

Views

What about the reciprocal of Heine theorem?

Published on 30 Mar 2026 - 10:39

score 215 · Answer 13 · 2016-12-25 00:34:00

215

Views

Closed compact unit ball

Published on 25 Dec 2016 - 0:34

score 236 · Answer 14 · 2016-12-29 15:08:33

236

Views

Compact set on $\mathbb{R}$ with this topology generated from the basis set $B=\{(–a,a)\ s.t.\ a \in \mathbb{R}\}$

Published on 29 Dec 2016 - 15:08

score 523 · Answer 15 · 2016-12-31 06:29:28

523

Views

A question about local compactness and $\sigma$-compactness

Published on 31 Dec 2016 - 6:29

List Question

Hausdorff distance for compact sets

Topology question. Which of the following subsets are open? closed? connected? Compact?

What open cover should i consider in order to show $(X,d)$ is not compact?

Functions which are zero at infinity are closed subset of bounded functions (even then domain is not punctured)

An fallacious argument on recursive open cover for the interval [0, 1]

Limit-point compactness implies sequential compactness in metric spaces

Are nice spaces paracompact iff their connected components are?

$A$ closed, $B$ compact, both non-empty - counterexample in R to show that $d(A,B)$ NOT = $d(a,b)$?

How is it proved that if every infinite subset of $E$ has at least an accumulation point in $E$, then $E$ is compact?

Do we need the Axiome of Choice in proving a Sequentially Compact Metric Space is Totally Bounded?

To cover compact set with cobbles

What about the reciprocal of Heine theorem?

Closed compact unit ball

Compact set on $\mathbb{R}$ with this topology generated from the basis set $B=\{(–a,a)\ s.t.\ a \in \mathbb{R}\}$

A question about local compactness and $\sigma$-compactness

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