List questions from compactness

Published on 10 Mar 2017 - 20:04

202

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$X$ is compactly generated iff every proper map from $Y$ to $X$ is closed

Published on 25 Mar 2026 - 9:25

1.4k

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Show that compact set is contained in the interior of another compact set

Published on 11 Mar 2017 - 11:22

529

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How to show, that the set of density functions with compact support is compact wrt. Wasserstein Metric?

Published on 23 Feb 2026 - 12:14

69

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Distance attained in a space

Published on 12 Mar 2017 - 3:04

390

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Locally compact Hausdorff space with every open set NOT $\sigma$-compact.

Published on 12 Mar 2017 - 9:14

396

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Compactness implies sequential compactness

Published on 12 Mar 2017 - 16:43

64

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Is $A$ compact and connected

Published on 08 Apr 2026 - 2:56

701

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Arbitrary Intersection of Compact Sets in Non-Hausdorff Spaces

Published on 13 Mar 2017 - 4:40

31

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Is $\{ w \in H : (h,w) = 0 \}$ a compact subset of $H$ for a fixed $h$?

Published on 07 Apr 2026 - 18:47

36

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Looking for counterexample or justification if a function is in B.V.

Published on 27 Mar 2026 - 0:09

352

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Path connected compact set with given property

Published on 15 Mar 2017 - 2:01

41

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Continuity of a function between a topological space to a one pt. compactification

Published on 15 Mar 2017 - 12:58

23

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Compact Space $A^Z\times A^Z\times Z$?

Published on 08 Apr 2026 - 2:30

283

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Question on compact sets in metric spaces

Published on 16 Mar 2017 - 20:09

List Question

Compactness of $\{(a_n,b_n)\} \cup \{(a,b)\}$ for convergent sequences

$X$ is compactly generated iff every proper map from $Y$ to $X$ is closed

Show that compact set is contained in the interior of another compact set

How to show, that the set of density functions with compact support is compact wrt. Wasserstein Metric?

Distance attained in a space

Locally compact Hausdorff space with every open set NOT $\sigma$-compact.

Compactness implies sequential compactness

Is $A$ compact and connected

Arbitrary Intersection of Compact Sets in Non-Hausdorff Spaces

Is $\{ w \in H : (h,w) = 0 \}$ a compact subset of $H$ for a fixed $h$?

Looking for counterexample or justification if a function is in B.V.

Path connected compact set with given property

Continuity of a function between a topological space to a one pt. compactification

Compact Space $A^Z\times A^Z\times Z$?

Question on compact sets in metric spaces

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