List questions from general-topology

Published on 25 Mar 2026 - 4:08

419

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Quotient space and quotient set for $\mathrm{End}(\mathbb{R}^2)$

Published on 25 Mar 2026 - 5:44

44

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Show there is only one topology for X such that only closed sets in X are A $\subset$ X, A=S(A).

Published on 03 Feb 2018 - 13:51

100

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$\{0,1\}^{\mathbb{N}}$ homeomorphic to $\mathbb{R}$?

Published on 25 Mar 2026 - 0:41

316

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Closed subalgebras of $C[0,1]$ and $C[0,1)$?

Published on 24 Mar 2026 - 19:14

216

Views

Difficulty showing that Brouwer degree is locally constant

Published on 03 Feb 2018 - 17:04

52

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Proving or disproving properties of a set in $\mathbb{R}^2$

Published on 03 Feb 2018 - 23:56

54

Views

How to write a segment in topology

Published on 04 Feb 2018 - 13:53

249

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Does every net have a countable subnet?

Published on 17 Mar 2026 - 10:21

58

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How can I understand/visualise this (finite) set?

Published on 27 Mar 2026 - 7:14

129

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Are sets of point convergence of Borel functions Borel?

Published on 24 Mar 2026 - 4:44

52

Views

Topology on union of circumferences

Published on 04 Feb 2018 - 19:07

271

Views

if $df_x$ is an isomorphism, why is $f$ locally equivalent to the identity?

Published on 25 Mar 2026 - 3:21

603

Views

Confusion about Local Coordinates

Published on 25 Mar 2026 - 3:24

212

Views

Prove that $X \setminus \operatorname{Int}A \subseteq \overline {X\setminus A} $

Published on 04 Feb 2018 - 23:17

List Question

Why isn't $T_1$ space also Hausforff?

Quotient space and quotient set for $\mathrm{End}(\mathbb{R}^2)$

Show there is only one topology for X such that only closed sets in X are A $\subset$ X, A=S(A).

$\{0,1\}^{\mathbb{N}}$ homeomorphic to $\mathbb{R}$?

Closed subalgebras of $C[0,1]$ and $C[0,1)$?

Difficulty showing that Brouwer degree is locally constant

Proving or disproving properties of a set in $\mathbb{R}^2$

How to write a segment in topology

Does every net have a countable subnet?

How can I understand/visualise this (finite) set?

Are sets of point convergence of Borel functions Borel?

Topology on union of circumferences

if $df_x$ is an isomorphism, why is $f$ locally equivalent to the identity?

Confusion about Local Coordinates

Prove that $X \setminus \operatorname{Int}A \subseteq \overline {X\setminus A} $

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