Question

Preserved properties through continuous linear maps

score 81 · Answer 1 · 2026-03-26 17:51:43

81

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Preserved properties through continuous linear maps

Published on 26 Mar 2026 - 17:51

score 184 · Answer 2 · 2026-04-09 09:32:01

184

Views

$X$ is compact Hausdorff iff it is pseudocompact and realcompact

Published on 09 Apr 2026 - 9:32

score 195 · Answer 3 · 2026-04-10 15:17:23

195

Views

Question about the Image of a compact transformation of a Hilbert space

Published on 10 Apr 2026 - 15:17

score 2.4k · Answer 4 · 2015-02-11 04:57:55

2.4k

Views

Show that if a subset $E$ of a compact metric space $X$ is compact in $X$, then it is closed in $X$.

Published on 11 Feb 2015 - 4:57

score 206 · Answer 5 · 2015-02-11 05:58:58

206

Views

Proving noncompactnes by showing open cover with no finite subcover

Published on 11 Feb 2015 - 5:58

score 2.1k · Answer 6 · 2015-02-11 20:16:27

2.1k

Views

Metric space of infinite binary sequences

Published on 11 Feb 2015 - 20:16

score 134 · Answer 7 · 2015-02-12 11:22:53

134

Views

Interior of a compact 3-manifold

Published on 12 Feb 2015 - 11:22

score 735 · Answer 8 · 2026-04-11 22:57:31

735

Views

Constract a compact set of real numbers whose limit points form a countable set.

Published on 11 Apr 2026 - 22:57

score 782 · Answer 9 · 2026-04-11 23:12:26

782

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Are $L^\infty$ bounded functions compact in $L^2$?

Published on 11 Apr 2026 - 23:12

score 667 · Answer 10 · 2026-04-11 16:53:39

667

Views

When does pointwise convergence on compact space imply uniform convergence?

Published on 11 Apr 2026 - 16:53

score 1k · Answer 11 · 2015-02-15 02:59:08

1k

Views

Show that there are non-well-founded models of Zermelo Fraenkel set theory

Published on 15 Feb 2015 - 2:59

score 166 · Answer 12 · 2026-03-26 11:04:19

166

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Reference request: $L^\infty(0,T;L^\infty(\Omega))$ is compactly embedded in $L^2(0,T;L^2(\Omega))$

Published on 26 Mar 2026 - 11:04

score 303 · Answer 13 · 2026-04-08 19:46:38

303

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How do I determine if a subset of a metric space is compact?

Published on 08 Apr 2026 - 19:46

score 135 · Answer 14 · 2015-02-16 16:08:33

135

Views

Show that the compactification is the Alexandroff-compactification

Published on 16 Feb 2015 - 16:08

score 78 · Answer 15 · 2026-04-11 01:44:39

78

Views

Compactness of the set of points where a continuous function achieves a local maximum

Published on 11 Apr 2026 - 1:44

List Question

Preserved properties through continuous linear maps

$X$ is compact Hausdorff iff it is pseudocompact and realcompact

Question about the Image of a compact transformation of a Hilbert space

Show that if a subset $E$ of a compact metric space $X$ is compact in $X$, then it is closed in $X$.

Proving noncompactnes by showing open cover with no finite subcover

Metric space of infinite binary sequences

Interior of a compact 3-manifold

Constract a compact set of real numbers whose limit points form a countable set.

Are $L^\infty$ bounded functions compact in $L^2$?

When does pointwise convergence on compact space imply uniform convergence?

Show that there are non-well-founded models of Zermelo Fraenkel set theory

Reference request: $L^\infty(0,T;L^\infty(\Omega))$ is compactly embedded in $L^2(0,T;L^2(\Omega))$

How do I determine if a subset of a metric space is compact?

Show that the compactification is the Alexandroff-compactification

Compactness of the set of points where a continuous function achieves a local maximum

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