Question

$k_w$-space is normal

score 71 · Answer 1 · 2026-04-10 16:29:41

71

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$k_w$-space is normal

Published on 10 Apr 2026 - 16:29

score 75 · Answer 2 · 2026-04-09 08:57:17

75

Views

Question about a nowhere dense set define in terms of spheres

Published on 09 Apr 2026 - 8:57

score 226 · Answer 3 · 2026-04-12 05:25:14

226

Views

What is the intuition for point-set topological inclusion vs topological containment?

Published on 12 Apr 2026 - 5:25

score 117 · Answer 4 · 2018-08-20 15:40:32

117

Views

Completing the converse of the theorem.

Published on 20 Aug 2018 - 15:40

score 541 · Answer 5 · 2026-04-11 21:26:47

541

Views

Proof verification that every compact set has a finite subcover

Published on 11 Apr 2026 - 21:26

score 805 · Answer 6 · 2026-04-02 14:02:19

805

Views

Let $G$ be a connected open set and let $f: G \to \mathbb{C}$ be an analytic function. Then the following are equivalent statements:

Published on 02 Apr 2026 - 14:02

score 157 · Answer 7 · 2026-04-12 14:20:48

157

Views

Explicit homeomorphism from $I \times I$ to itself that maps $I\times \{0\} \cup \{0,1\} \times I$ to $I \times \{0\}$

Published on 12 Apr 2026 - 14:20

score 420 · Answer 8 · 2026-04-09 03:52:52

420

Views

When are almost block companion matrices which yield a given characteristic polynomial connected?

Published on 09 Apr 2026 - 3:52

score 209 · Answer 9 · 2026-04-12 13:26:52

209

Views

Is the Banach space of continuous functions $I \to \ell^2$ separable?

Published on 12 Apr 2026 - 13:26

score 96 · Answer 10 · 2026-04-13 02:51:25

96

Views

How do we express the union of closed neighborhoods of a cover with pairwise boundary intersection for a manifold $M$?

Published on 13 Apr 2026 - 2:51

score 871 · Answer 11 · 2026-04-13 19:23:07

871

Views

For a continuous group action, is the projection $\pi:M\to M/G$ into the orbit space an open map?

Published on 13 Apr 2026 - 19:23

score 66 · Answer 12 · 2026-04-11 04:55:39

66

Views

Unraveling a ball of yarn from the inside

Published on 11 Apr 2026 - 4:55

score 151 · Answer 13 · 2026-04-13 19:21:44

151

Views

Checking whether $\{f_n\}$ has a convergent subsequence in $L^2$-norm.

Published on 13 Apr 2026 - 19:21

score 31 · Answer 14 · 2018-08-21 15:35:49

31

Views

It would really be $f|_{I^n}$ a homeomorphism onto $I^n$ and $f (I^n)$?

Published on 21 Aug 2018 - 15:35

score 1.6k · Answer 15 · 2026-03-29 07:28:53

1.6k

Views

Continuous, proper, injective map into first-countable space is homeomorphism onto image

Published on 29 Mar 2026 - 7:28

List Question

$k_w$-space is normal

Question about a nowhere dense set define in terms of spheres

What is the intuition for point-set topological inclusion vs topological containment?

Completing the converse of the theorem.

Proof verification that every compact set has a finite subcover

Let $G$ be a connected open set and let $f: G \to \mathbb{C}$ be an analytic function. Then the following are equivalent statements:

Explicit homeomorphism from $I \times I$ to itself that maps $I\times \{0\} \cup \{0,1\} \times I$ to $I \times \{0\}$

When are almost block companion matrices which yield a given characteristic polynomial connected?

Is the Banach space of continuous functions $I \to \ell^2$ separable?

How do we express the union of closed neighborhoods of a cover with pairwise boundary intersection for a manifold $M$?

For a continuous group action, is the projection $\pi:M\to M/G$ into the orbit space an open map?

Unraveling a ball of yarn from the inside

Checking whether $\{f_n\}$ has a convergent subsequence in $L^2$-norm.

It would really be $f|_{I^n}$ a homeomorphism onto $I^n$ and $f (I^n)$?

Continuous, proper, injective map into first-countable space is homeomorphism onto image

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