Question

Exercise of the book "Rings of Continuous Functions" by Leonard Gillman. Explanation

score 74 · Answer 1 · 2026-03-27 15:19:09

74

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Exercise of the book "Rings of Continuous Functions" by Leonard Gillman. Explanation

Published on 27 Mar 2026 - 15:19

score 174 · Answer 2 · 2018-03-22 08:49:40

174

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Is $\mathbb{R}$ with standard+excluded point topology metrizable?

Published on 22 Mar 2018 - 8:49

score 722 · Answer 3 · 2026-03-25 02:32:21

722

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Every $T_3$ space is $T_2$

Published on 25 Mar 2026 - 2:32

score 1.9k · Answer 4 · 2018-03-22 09:13:06

1.9k

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Standard topology on $\mathbb{R}$ is not finer than $K-$ topology on $\mathbb{R}$.

Published on 22 Mar 2018 - 9:13

score 222 · Answer 5 · 2018-03-22 09:53:05

222

Views

some confusion in box topology?

Published on 22 Mar 2018 - 9:53

score 29 · Answer 6 · 2026-03-30 14:08:11

29

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A connectedness question

Published on 30 Mar 2026 - 14:08

score 670 · Answer 7 · 2026-03-31 15:23:36

670

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List of topologies on 5 element set

Published on 31 Mar 2026 - 15:23

score 63 · Answer 8 · 2018-03-22 15:54:42

63

Views

Step in proof: existence best $\infty$-norm approximation polynomial

Published on 22 Mar 2018 - 15:54

score 788 · Answer 9 · 2026-03-25 16:40:02

788

Views

Explaining an example of a topology not induced by a metric

Published on 25 Mar 2026 - 16:40

score 182 · Answer 10 · 2018-03-22 17:59:39

182

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Convergence and adherent points of filter

Published on 22 Mar 2018 - 17:59

score 138 · Answer 11 · 2026-03-31 15:15:46

138

Views

Topology and combinatorics

Published on 31 Mar 2026 - 15:15

score 377 · Answer 12 · 2018-03-22 19:52:59

377

Views

X contains all its accumulation points $\iff$ X contains all its closure points.

Published on 22 Mar 2018 - 19:52

score 155 · Answer 13 · 2026-03-30 14:11:17

155

Views

Prove that in $\mathbb{R}^n$, if $B_r(x) = B_s(y)$, then $x = y$ and $r = s$.

Published on 30 Mar 2026 - 14:11

score 194 · Answer 14 · 2026-03-25 01:37:06

194

Views

Extensions of functions vanishing at infinity on locally compact Hausdorff spaces

Published on 25 Mar 2026 - 1:37

score 166 · Answer 15 · 2018-03-22 23:38:27

166

Views

$X \times Z \cong Y \times Z \implies X \cong Y$?

Published on 22 Mar 2018 - 23:38

List Question

Exercise of the book "Rings of Continuous Functions" by Leonard Gillman. Explanation

Is $\mathbb{R}$ with standard+excluded point topology metrizable?

Every $T_3$ space is $T_2$

Standard topology on $\mathbb{R}$ is not finer than $K-$ topology on $\mathbb{R}$.

some confusion in box topology?

A connectedness question

List of topologies on 5 element set

Step in proof: existence best $\infty$-norm approximation polynomial

Explaining an example of a topology not induced by a metric

Convergence and adherent points of filter

Topology and combinatorics

X contains all its accumulation points $\iff$ X contains all its closure points.

Prove that in $\mathbb{R}^n$, if $B_r(x) = B_s(y)$, then $x = y$ and $r = s$.

Extensions of functions vanishing at infinity on locally compact Hausdorff spaces

$X \times Z \cong Y \times Z \implies X \cong Y$?

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