Question

Topological shape of the color spectrum

score 183 · Answer 1 · 2026-04-13 00:24:25

183

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Topological shape of the color spectrum

Published on 13 Apr 2026 - 0:24

score 164 · Answer 2 · 2026-05-10 16:14:28

164

Views

If the closure of each $\mathcal{R}$-saturated set is also $\mathcal{R}$-saturated, is then $\mathcal{R}$ an open relation (projection is open)?

Published on 10 May 2026 - 16:14

score 584 · Answer 3 · 2026-05-10 16:06:21

584

Views

kernel of quotient is quotient of kernel?

Published on 10 May 2026 - 16:06

score 774 · Answer 4 · 2026-04-15 19:03:14

774

Views

Topology of $S^2 \times S^2 \setminus Diagonal = S^2 \times S^2 \setminus \{ (x,x): x\in S^2 \} $

Published on 15 Apr 2026 - 19:03

score 154 · Answer 5 · 2026-04-14 17:42:45

154

Views

Uniqueness of passing to the quotient space mapping

Published on 14 Apr 2026 - 17:42

score 354 · Answer 6 · 2026-04-29 12:24:43

354

Views

G-equivariant isomorphism inducing isomorphisms on quotients

Published on 29 Apr 2026 - 12:24

score 324 · Answer 7 · 2026-04-16 11:36:29

324

Views

Equivalence relation on topological space such that each equivalence class and the quotient space is connected

Published on 16 Apr 2026 - 11:36

score 446 · Answer 8 · 2026-05-10 19:58:22

446

Views

Equivalence relation on topological space such that each equivalence class and the quotient space is path connected

Published on 10 May 2026 - 19:58

score 583 · Answer 9 · 2026-04-22 17:51:56

583

Views

The continuous image of a First Countable Space need not be First Countable (Willard 16.B.1)

Published on 22 Apr 2026 - 17:51

score 1k · Answer 10 · 2026-05-10 18:58:35

1k

Views

Path connected quotient implies path connected space

Published on 10 May 2026 - 18:58

score 61 · Answer 11 · 2026-05-10 16:13:19

61

Views

Consider $\mathbb{R}^3/E$ with $E = \{(x,y,z) \in \mathbb{R}^2 \vert x^2 + y^2 + z^2 \leq 1\}$

Published on 10 May 2026 - 16:13

score 173 · Answer 12 · 2026-05-10 14:55:53

173

Views

Understanding geometric realisation of a simplicial set

Published on 10 May 2026 - 14:55

score 407 · Answer 13 · 2026-05-10 15:46:47

407

Views

Universal property of quotient group to get epimorphism

Published on 10 May 2026 - 15:46

score 210 · Answer 14 · 2026-03-25 06:32:04

210

Views

What is the explicit equivalence relation for an adjunction space $X\cup_f Y$

Published on 25 Mar 2026 - 6:32

score 216 · Answer 15 · 2026-04-14 10:32:34

216

Views

Does identifying opposite points in Euclidean space result in a smooth manifold?

Published on 14 Apr 2026 - 10:32

List Question

Topological shape of the color spectrum

If the closure of each $\mathcal{R}$-saturated set is also $\mathcal{R}$-saturated, is then $\mathcal{R}$ an open relation (projection is open)?

kernel of quotient is quotient of kernel?

Topology of $S^2 \times S^2 \setminus Diagonal = S^2 \times S^2 \setminus \{ (x,x): x\in S^2 \} $

Uniqueness of passing to the quotient space mapping

G-equivariant isomorphism inducing isomorphisms on quotients

Equivalence relation on topological space such that each equivalence class and the quotient space is connected

Equivalence relation on topological space such that each equivalence class and the quotient space is path connected

The continuous image of a First Countable Space need not be First Countable (Willard 16.B.1)

Path connected quotient implies path connected space

Consider $\mathbb{R}^3/E$ with $E = \{(x,y,z) \in \mathbb{R}^2 \vert x^2 + y^2 + z^2 \leq 1\}$

Understanding geometric realisation of a simplicial set

Universal property of quotient group to get epimorphism

What is the explicit equivalence relation for an adjunction space $X\cup_f Y$

Does identifying opposite points in Euclidean space result in a smooth manifold?

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