Question

Let $H_{a,b,c} = \{(x,y) \in \mathbb{R}^2 \vert x = at + b, y = at + c, 0 < t < 1\}$

score 26 · Answer 1 · 2018-02-02 08:47:21

26

Views

Let $H_{a,b,c} = \{(x,y) \in \mathbb{R}^2 \vert x = at + b, y = at + c, 0 < t < 1\}$

Published on 02 Feb 2018 - 8:47

score 115 · Answer 2 · 2026-03-23 07:18:00

115

Views

Retractions and local finiteness: Are these circles a retract of $\mathbb R^2$?

Published on 23 Mar 2026 - 7:18

score 69 · Answer 3 · 2026-03-25 03:19:20

69

Views

connected 2D manifold contained in a 2D affine plane

Published on 25 Mar 2026 - 3:19

score 147 · Answer 4 · 2026-03-25 16:45:36

147

Views

Condition for a function $\widetilde \phi:\mathbb{H}\rightarrow \mathbb{H}$ to descend to $S_g$

Published on 25 Mar 2026 - 16:45

score 64 · Answer 5 · 2018-02-02 18:30:47

64

Views

Is the function $f\colon{\mathbb{Z}}\to\overline{\mathbb{Z}}, x\mapsto x+\infty$ continuous?

Published on 02 Feb 2018 - 18:30

score 63 · Answer 6 · 2018-02-02 18:40:48

63

Views

Unable to solve this metric space question

Published on 02 Feb 2018 - 18:40

score 276 · Answer 7 · 2026-03-25 16:46:33

276

Views

Inverse as a function of bijective paths are also homotopic

Published on 25 Mar 2026 - 16:46

score 61 · Answer 8 · 2026-03-24 23:46:24

61

Views

Proof of uniqueness of positive cubes

Published on 24 Mar 2026 - 23:46

score 167 · Answer 9 · 2018-02-03 01:27:56

167

Views

Half-spaces of infinite dimensional spaces

Published on 03 Feb 2018 - 1:27

score 1.1k · Answer 10 · 2026-03-24 22:17:04

1.1k

Views

Is $\mathbb{R}\setminus\mathbb{Q}$ separable?

Published on 24 Mar 2026 - 22:17

score 651 · Answer 11 · 2018-02-03 03:33:47

651

Views

Is the union of two circles in $R^{2}$ a locally Euclidean space?

Published on 03 Feb 2018 - 3:33

score 2.2k · Answer 12 · 2026-03-20 18:25:47

2.2k

Views

The map $p : S^1 → S^1$ given by $p(z) = z^2$ is a covering map. Generalize to $p(z) = z^n$.

Published on 20 Mar 2026 - 18:25

score 74 · Answer 13 · 2026-03-20 01:46:04

74

Views

Supposing B is orientable, and supposing A#B is homeomorphic to C#B, does it follow that A and C are homeomorphic?

Published on 20 Mar 2026 - 1:46

score 132 · Answer 14 · 2026-03-25 13:34:22

132

Views

Set of discontinues is always separable and what guarantees existence of $n_1$?

Published on 25 Mar 2026 - 13:34

score 679 · Answer 15 · 2026-03-25 08:59:59

679

Views

How to visualize quotient space?

Published on 25 Mar 2026 - 8:59

List Question

Let $H_{a,b,c} = \{(x,y) \in \mathbb{R}^2 \vert x = at + b, y = at + c, 0 < t < 1\}$

Retractions and local finiteness: Are these circles a retract of $\mathbb R^2$?

connected 2D manifold contained in a 2D affine plane

Condition for a function $\widetilde \phi:\mathbb{H}\rightarrow \mathbb{H}$ to descend to $S_g$

Is the function $f\colon{\mathbb{Z}}\to\overline{\mathbb{Z}}, x\mapsto x+\infty$ continuous?

Unable to solve this metric space question

Inverse as a function of bijective paths are also homotopic

Proof of uniqueness of positive cubes

Half-spaces of infinite dimensional spaces

Is $\mathbb{R}\setminus\mathbb{Q}$ separable?

Is the union of two circles in $R^{2}$ a locally Euclidean space?

The map $p : S^1 → S^1$ given by $p(z) = z^2$ is a covering map. Generalize to $p(z) = z^n$.

Supposing B is orientable, and supposing A#B is homeomorphic to C#B, does it follow that A and C are homeomorphic?

Set of discontinues is always separable and what guarantees existence of $n_1$?

How to visualize quotient space?

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