List questions from closed-map

Published on 02 Oct 2018 - 15:38

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Example of quotient map from Munkres book

Published on 21 Oct 2018 - 22:48

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Open and Closed maps in topology atan example

Published on 06 Nov 2018 - 20:15

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An example of open but not closed map.

Published on 05 Dec 2018 - 17:31

25

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coverage mapping at covering spaces

Published on 07 Dec 2018 - 18:42

706

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Show that given a proper map, for each closed set F its image f(F) is closed

Published on 11 Dec 2018 - 12:48

58

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About Closed Graph Theorem for conjugate linear map

Published on 25 Mar 2026 - 4:40

282

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Uniform map of R3 colour space onto a discrete number line

Published on 02 Jan 2019 - 22:47

102

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Find continuous functions $f,g$ such that $g\circ f $ is closed and continuous but neither $g$ nor $f$ is closed map.

Published on 27 Jan 2019 - 7:25

283

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Restriction section of a sheaf to a closed set?

Published on 04 Feb 2019 - 21:37

663

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Proof Verification: Show that if Y is compact, then the projection is a closed map

Published on 02 Mar 2019 - 5:36

885

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Projection map is closed or not?

Published on 03 Apr 2019 - 5:51

69

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If $\pi(x,y)=x$ and $F$ is closed, $\pi(F)$ is closed.

Published on 08 Apr 2019 - 4:23

105

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Why is the map $\varphi$ closed?

Published on 23 Feb 2026 - 4:14

44

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Finding area of transformed plane

Published on 28 Apr 2019 - 4:37

List Question

Does the distance map send closed sets to closed sets?

Example of quotient map from Munkres book

Open and Closed maps in topology atan example

An example of open but not closed map.

coverage mapping at covering spaces

Show that given a proper map, for each closed set F its image f(F) is closed

About Closed Graph Theorem for conjugate linear map

Uniform map of R3 colour space onto a discrete number line

Find continuous functions $f,g$ such that $g\circ f $ is closed and continuous but neither $g$ nor $f$ is closed map.

Restriction section of a sheaf to a closed set?

Proof Verification: Show that if Y is compact, then the projection is a closed map

Projection map is closed or not?

If $\pi(x,y)=x$ and $F$ is closed, $\pi(F)$ is closed.

Why is the map $\varphi$ closed?

Finding area of transformed plane

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