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15
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Does the distance map send closed sets to closed sets?

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#general-topology #metric-spaces #closed-map
534
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Example of quotient map from Munkres book

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#general-topology #closed-map
761
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Open and Closed maps in topology atan example

Published on
#general-topology #open-map #closed-map
7.8k
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An example of open but not closed map.

Published on
#general-topology #open-map #closed-map
29
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coverage mapping at covering spaces

Published on
#algebraic-topology #covering-spaces #closed-map
709
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Show that given a proper map, for each closed set F its image f(F) is closed

Published on
#general-topology #continuity #compactness #normed-spaces #closed-map
62
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About Closed Graph Theorem for conjugate linear map

Published on
#functional-analysis #closed-graph #closed-map
285
Views

Uniform map of R3 colour space onto a discrete number line

Published on
#computer-science #closed-map
103
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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
#real-analysis #general-topology #examples-counterexamples #open-map #closed-map
287
Views

Restriction section of a sheaf to a closed set?

Published on
#algebraic-geometry #sheaf-theory #schemes #divisors-algebraic-geometry #closed-map
666
Views

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

Published on
#general-topology #compactness #product-space #closed-map
890
Views

Projection map is closed or not?

Published on
#projection #closed-map
72
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If $\pi(x,y)=x$ and $F$ is closed, $\pi(F)$ is closed.

Published on
#real-analysis #compactness #closed-map
109
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Why is the map $\varphi$ closed?

Published on
#commutative-algebra #proof-explanation #integral-extensions #closed-map
49
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Finding area of transformed plane

Published on
#linear-transformations #planar-graphs #closed-map

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