Question

Confusion about the definition of a regular covering map

score 398 · Answer 1 · 2026-03-25 12:51:58

398

Views

Confusion about the definition of a regular covering map

Published on 25 Mar 2026 - 12:51

score 131 · Answer 2 · 2018-05-26 19:00:23

131

Views

In a Hausdorff topological space, separation axiom holds for disjoint closed set $A_1,A_2$?

Published on 26 May 2018 - 19:00

score 129 · Answer 3 · 2026-03-26 01:03:34

129

Views

What should be proper definition of a polyhedron(not necessarily convex)?

Published on 26 Mar 2026 - 1:03

score 118 · Answer 4 · 2026-03-28 08:38:08

118

Views

Disconnected sets in $\Bbb R^n$ and closed sets.

Published on 28 Mar 2026 - 8:38

score 30 · Answer 5 · 2026-03-27 20:21:29

30

Views

What is the proper term for the following class of intervals?

Published on 27 Mar 2026 - 20:21

score 28 · Answer 6 · 2026-03-25 17:20:53

28

Views

The space of probability measures is closed? Defined by $\mathcal{P}=\{P\in \mathscr{P}:\mathbf{E}_P[\vec{G}(\xi)]\in K\}$

Published on 25 Mar 2026 - 17:20

score 615 · Answer 7 · 2026-03-25 14:22:50

615

Views

Regular Covering Map corresponding to a normal subgroup of a free group

Published on 25 Mar 2026 - 14:22

score 106 · Answer 8 · 2018-05-27 09:54:32

106

Views

How does connectedness in $\mathbb{R}^n$ imply path-connectedness?

Published on 27 May 2018 - 9:54

score 264 · Answer 9 · 2018-05-27 10:05:13

264

Views

clopen sets are both functionally open and functionally closed

Published on 27 May 2018 - 10:05

score 31 · Answer 10 · 2018-05-27 10:28:51

31

Views

Uniformly convergent in topology

Published on 27 May 2018 - 10:28

score 42 · Answer 11 · 2018-05-27 11:31:33

How to prove $f:\mathbb R→[0,1]$ with $f(x)=0$ for $x\leq 0$ and $f(x)=x$ for $x\in[0,1]$, $f(x)=1$ for $x\geq 1$ is not an open mapping?

score 1.2k · Answer 12 · 2026-04-01 04:41:57

1.2k

Views

Continuous Extension of Densely Defined Continuous (but not Uniformly Continuous) Function.

Published on 01 Apr 2026 - 4:41

score 271 · Answer 13 · 2026-03-27 02:01:08

271

Views

Connected 1-manifolds

Published on 27 Mar 2026 - 2:01

score 75 · Answer 14 · 2026-03-25 18:51:13

75

Views

Non-standard topology on figure-eight

Published on 25 Mar 2026 - 18:51

score 328 · Answer 15 · 2018-05-27 17:08:24

328

Views

The final topology is finer than the initial

Published on 27 May 2018 - 17:08

List Question

Confusion about the definition of a regular covering map

In a Hausdorff topological space, separation axiom holds for disjoint closed set $A_1,A_2$?

What should be proper definition of a polyhedron(not necessarily convex)?

Disconnected sets in $\Bbb R^n$ and closed sets.

What is the proper term for the following class of intervals?

The space of probability measures is closed? Defined by $\mathcal{P}=\{P\in \mathscr{P}:\mathbf{E}_P[\vec{G}(\xi)]\in K\}$

Regular Covering Map corresponding to a normal subgroup of a free group

How does connectedness in $\mathbb{R}^n$ imply path-connectedness?

clopen sets are both functionally open and functionally closed

Uniformly convergent in topology

How to prove $f:\mathbb R→[0,1]$ with $f(x)=0$ for $x\leq 0$ and $f(x)=x$ for $x\in[0,1]$, $f(x)=1$ for $x\geq 1$ is not an open mapping?

Continuous Extension of Densely Defined Continuous (but not Uniformly Continuous) Function.

Connected 1-manifolds

Non-standard topology on figure-eight

The final topology is finer than the initial

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