Category:Definitions/Proper Mappings
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This category contains definitions related to Proper Mappings.
Related results can be found in Category:Proper Mappings.
Let $X$ and $Y$ be topological spaces.
A mapping $f: X \to Y$ is proper if and only if for every compact subspace $K \subset Y$, its preimage $f^{-1} \sqbrk K$ is also compact.
Pages in category "Definitions/Proper Mappings"
The following 3 pages are in this category, out of 3 total.