Question

Compactess of the sum closed balls whose centers is a compact set.

score 54 · Answer 1 · 2026-04-13 21:43:50

54

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Compactess of the sum closed balls whose centers is a compact set.

Published on 13 Apr 2026 - 21:43

score 402 · Answer 2 · 2026-05-14 20:19:09

402

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Compactly supported cohomology of a connected manifolds of finite type.

Published on 14 May 2026 - 20:19

score 469 · Answer 3 · 2026-05-10 15:02:46

469

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The product of perfectly normal compact Hausdorff spaces is perfectly normal

Published on 10 May 2026 - 15:02

score 276 · Answer 4 · 2026-04-12 12:30:31

276

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About Michael Spivak's proof of Heine - Borel Theorem for the line in his book "Calculus on Manifolds"

Published on 12 Apr 2026 - 12:30

score 58 · Answer 5 · 2026-04-11 16:16:37

58

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$C(K, K)$ equipped with certain topology compact?

Published on 11 Apr 2026 - 16:16

score 734 · Answer 6 · 2026-04-10 11:14:12

734

Views

Show that a locally compact subspace of a locally compact Hausdorff space is open in its closure

Published on 10 Apr 2026 - 11:14

score 355 · Answer 7 · 2026-04-15 22:31:08

355

Views

Arzela-Ascoli Theorem for a subset of $C([0,1])$

Published on 15 Apr 2026 - 22:31

score 81 · Answer 8 · 2026-04-15 20:49:28

81

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Have I shown correctly that the set M is compact with respect to the metric $d(x,y):=\min\{|y-x|,1-|y-x|\}$ for $x,y \in M$?

Published on 15 Apr 2026 - 20:49

score 277 · Answer 9 · 2026-04-13 20:39:36

277

Views

Showing that the set of non- decreasing bounded functions is compact

Published on 13 Apr 2026 - 20:39

score 1.1k · Answer 10 · 2026-04-14 01:35:11

1.1k

Views

Finite Intersection Property proof attempt.

Published on 14 Apr 2026 - 1:35

score 1.1k · Answer 11 · 2026-04-13 14:02:49

1.1k

Views

A compact space has the Bolzano-Weierstrass property.

Published on 13 Apr 2026 - 14:02

score 90 · Answer 12 · 2026-04-14 02:12:35

90

Views

Please, where can I find some good worked examples of compact spaces?

Published on 14 Apr 2026 - 2:12

score 358 · Answer 13 · 2026-04-09 06:22:08

358

Views

Compactness of sublevels

Published on 09 Apr 2026 - 6:22

score 447 · Answer 14 · 2026-04-15 00:27:20

447

Views

Arzela-Ascoli Theorem for a specific family of functions on $\mathbb{R}$

Published on 15 Apr 2026 - 0:27

score 55 · Answer 15 · 2026-05-10 19:03:25

55

Views

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

Published on 10 May 2026 - 19:03

List Question

Compactess of the sum closed balls whose centers is a compact set.

Compactly supported cohomology of a connected manifolds of finite type.

The product of perfectly normal compact Hausdorff spaces is perfectly normal

About Michael Spivak's proof of Heine - Borel Theorem for the line in his book "Calculus on Manifolds"

$C(K, K)$ equipped with certain topology compact?

Show that a locally compact subspace of a locally compact Hausdorff space is open in its closure

Arzela-Ascoli Theorem for a subset of $C([0,1])$

Have I shown correctly that the set M is compact with respect to the metric $d(x,y):=\min\{|y-x|,1-|y-x|\}$ for $x,y \in M$?

Showing that the set of non- decreasing bounded functions is compact

Finite Intersection Property proof attempt.

A compact space has the Bolzano-Weierstrass property.

Please, where can I find some good worked examples of compact spaces?

Compactness of sublevels

Arzela-Ascoli Theorem for a specific family of functions on $\mathbb{R}$

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

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