Question

Is every open subset of a locally compact Hausdorff space, locally compact in the subspace topology?

score 321 · Answer 1 · 2026-03-28 08:09:45

321

Views

Is every open subset of a locally compact Hausdorff space, locally compact in the subspace topology?

Published on 28 Mar 2026 - 8:09

score 335 · Answer 2 · 2018-05-17 12:24:13

335

Views

Normal and regular space

Published on 17 May 2018 - 12:24

score 142 · Answer 3 · 2026-03-28 12:32:09

142

Views

What is $\ \overline{\bigcup_{p≥ 1}\ \{A\in M_n(\mathbb C), \ A^p = I_n\}} \ $?

Published on 28 Mar 2026 - 12:32

score 46 · Answer 4 · 2026-04-01 21:51:44

46

Views

Proof Verification: Continuity and Open sets

Published on 01 Apr 2026 - 21:51

score 28 · Answer 5 · 2026-03-28 16:58:09

28

Views

Let $A$ be a non-empty compact set in a normed space $E$. Prove that there exists a finite or countable subset of $A$ which is dense in $A$.

Published on 28 Mar 2026 - 16:58

score 56 · Answer 6 · 2026-04-01 21:59:12

56

Views

Proof Verification: Continuity and Closed sets

Published on 01 Apr 2026 - 21:59

score 115 · Answer 7 · 2026-03-25 16:03:55

115

Views

For all integers $m$ there exists a map $f: S^{1} \to S^{1}$ with degree $m$.

Published on 25 Mar 2026 - 16:03

score 56 · Answer 8 · 2018-05-17 16:40:47

56

Views

Finding a retract on compact subset of $\mathbb{R}^2$

Published on 17 May 2018 - 16:40

score 232 · Answer 9 · 2026-04-02 18:42:34

232

Views

Proof Verification:Prove that the intersection of an arbitrary collection of compact sets in R is compact.

Published on 02 Apr 2026 - 18:42

score 656 · Answer 10 · 2026-03-26 16:09:52

656

Views

An inner product on the quotient space $F/\text{Ker}(M)$

Published on 26 Mar 2026 - 16:09

score 85 · Answer 11 · 2026-03-28 08:38:25

85

Views

Connected Set and Boundary Problem

Published on 28 Mar 2026 - 8:38

score 94 · Answer 12 · 2026-03-25 08:37:54

94

Views

What geometry or topology best embodies the nonlocality of quantum entanglement?

Published on 25 Mar 2026 - 8:37

score 32 · Answer 13 · 2026-03-28 06:40:27

32

Views

Closed subsets of a compact topological space are compact proof clarification 3

Published on 28 Mar 2026 - 6:40

score 72 · Answer 14 · 2018-05-17 22:38:48

72

Views

How to decide if this set is connected or not?

Published on 17 May 2018 - 22:38

score 401 · Answer 15 · 2026-03-25 02:36:53

401

Views

TDA- Persistence Diagram and Barcodes using image data (and TDA R package)

Published on 25 Mar 2026 - 2:36

List Question

Is every open subset of a locally compact Hausdorff space, locally compact in the subspace topology?

Normal and regular space

What is $\ \overline{\bigcup_{p≥ 1}\ \{A\in M_n(\mathbb C), \ A^p = I_n\}} \ $?

Proof Verification: Continuity and Open sets

Let $A$ be a non-empty compact set in a normed space $E$. Prove that there exists a finite or countable subset of $A$ which is dense in $A$.

Proof Verification: Continuity and Closed sets

For all integers $m$ there exists a map $f: S^{1} \to S^{1}$ with degree $m$.

Finding a retract on compact subset of $\mathbb{R}^2$

Proof Verification:Prove that the intersection of an arbitrary collection of compact sets in R is compact.

An inner product on the quotient space $F/\text{Ker}(M)$

Connected Set and Boundary Problem

What geometry or topology best embodies the nonlocality of quantum entanglement?

Closed subsets of a compact topological space are compact proof clarification 3

How to decide if this set is connected or not?

TDA- Persistence Diagram and Barcodes using image data (and TDA R package)

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