List questions from compactness

Published on 30 Mar 2026 - 17:49

172

Views

If an upper semicontinuous multivalued map is compact on a set, is it compact on the boundary as well?

Published on 25 Mar 2026 - 20:02

77

Views

Continous function on compact interval - bounded

Published on 01 May 2014 - 16:35

474

Views

Compactness of Propositional Logic

Published on 03 May 2014 - 21:05

195

Views

Example of Stone-Weierstrass Theorem on a non-interval? (3-dim compact set for example)

Published on 04 May 2014 - 3:23

160

Views

Prove any continuous function on a 3-dim ellipsoid can be approximated by a polynomial

Published on 04 May 2014 - 4:16

82

Views

$\left\{x\in H: 2\leq \|x\|\leq 5\right\}$ is compact?

Published on 01 Apr 2026 - 11:36

867

Views

Proof of uniform continuity on compact sets

Published on 28 Mar 2026 - 6:48

756

Views

Map preserving intervals but discontinuous

Published on 05 May 2014 - 20:03

1.1k

Views

Is every compact space compactly generated?

Published on 30 Mar 2026 - 11:24

152

Views

Is Alexandroff Duplicate A(X) of X paracompact?

Published on 06 May 2014 - 9:36

119

Views

Closed and Compactness on $\mathbb Q$ (Multiple Choice)

Published on 06 May 2014 - 14:36

92

Views

Compactness, topology

Published on 06 May 2014 - 22:18

1k

Views

Showing that the function $C(b)$ is a compact set for $|b| > 1$

Published on 06 May 2014 - 23:25

124

Views

Exercise in Section 2.4 of Singer & Thorpe

Published on 25 Mar 2026 - 12:53

List Question

Compact and connected

If an upper semicontinuous multivalued map is compact on a set, is it compact on the boundary as well?

Continous function on compact interval - bounded

Compactness of Propositional Logic

Example of Stone-Weierstrass Theorem on a non-interval? (3-dim compact set for example)

Prove any continuous function on a 3-dim ellipsoid can be approximated by a polynomial

$\left\{x\in H: 2\leq \|x\|\leq 5\right\}$ is compact?

Proof of uniform continuity on compact sets

Map preserving intervals but discontinuous

Is every compact space compactly generated?

Is Alexandroff Duplicate A(X) of X paracompact?

Closed and Compactness on $\mathbb Q$ (Multiple Choice)

Compactness, topology

Showing that the function $C(b)$ is a compact set for $|b| > 1$

Exercise in Section 2.4 of Singer & Thorpe

Trending Questions

Popular # Hahtags

Popular Questions