List questions from general-topology

Published on 03 Apr 2018 - 21:30

159

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Surgery on $S^3$

Published on 31 Mar 2026 - 12:25

111

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Smooth Path joining any two points in $U=\{(x,y)\in \mathbb{R^2}|1<x^2+y^2<4\}$.

Published on 25 Mar 2026 - 6:21

1.1k

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Connectedness of Cofinite Topology

Published on 30 Mar 2026 - 13:53

98

Views

Metric Topology: Collection of $B_d(x,\epsilon)$?

Published on 30 Mar 2026 - 17:35

384

Views

Homeomorphism between $[0,\infty)^n$ with Upper Half-Space $\mathbb{H}^n$

Published on 25 Mar 2026 - 7:40

381

Views

Self studying topology: Velleman before Mendelson?

Published on 04 Apr 2018 - 2:26

1k

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A space is metrisable if and only if it admits a countable basis

Published on 28 Mar 2026 - 3:03

208

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Limit point of distances in compact set

Published on 27 Mar 2026 - 16:55

386

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Constructing symplectic tubular neighborhood of compact submanifold

Published on 25 Mar 2026 - 9:50

81

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Show that $\tau(\frac{1}{n})$ is a topology for $\mathbb{R}$.

Published on 04 Apr 2018 - 6:58

312

Views

$(X \times Y) \setminus (A \times B)$ is connected.

Published on 30 Mar 2026 - 13:53

183

Views

Diameter closure set

Published on 30 Mar 2026 - 17:39

186

Views

Compactness of quotient topology

Published on 27 Mar 2026 - 16:55

365

Views

Cantor-Bendixson rank of space of types

Published on 25 Mar 2026 - 6:05

List Question

Definition of composition of functions $\mathbb{R}^3\to\mathbb{R}^3$.

Surgery on $S^3$

Smooth Path joining any two points in $U=\{(x,y)\in \mathbb{R^2}|1<x^2+y^2<4\}$.

Connectedness of Cofinite Topology

Metric Topology: Collection of $B_d(x,\epsilon)$?

Homeomorphism between $[0,\infty)^n$ with Upper Half-Space $\mathbb{H}^n$

Self studying topology: Velleman before Mendelson?

A space is metrisable if and only if it admits a countable basis

Limit point of distances in compact set

Constructing symplectic tubular neighborhood of compact submanifold

Show that $\tau(\frac{1}{n})$ is a topology for $\mathbb{R}$.

$(X \times Y) \setminus (A \times B)$ is connected.

Diameter closure set

Compactness of quotient topology

Cantor-Bendixson rank of space of types

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