A map 
between topological
spaces that maps closed sets to closed
sets. If 
is bijective, then
where 
denotes the inverse
map. In particular, a homeomorphism can be
characterized as a continuous bijection which is open (or, equivalently, closed).
This entry contributed by Margherita
Barile
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Cite this as:
Barile, Margherita. "Closed Map." From MathWorld--A Wolfram Web Resource, created by Eric
W. Weisstein. https://mathworld.wolfram.com/ClosedMap.html
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