Let \(X\) and \(Y\) be topological spaces. A map \(f\colon X\to Y\) is closed if \(f(C)\) is closed in \(Y\) for every closed subset \(C\subseteq X\).
Closed map
D-METXE
D-METXE
Let \(X\) and \(Y\) be topological spaces. A map \(f\colon X\to Y\) is closed if \(f(C)\) is closed in \(Y\) for every closed subset \(C\subseteq X\).