Show that any map between compact Hausdorff spaces must be proper.
Solution
If \(Y\) is compact Hausdorff, \(U\) is compact iff \(U\) is closed, and by continuity closed sets pull back.
E-OYP3Y
Show that any map between compact Hausdorff spaces must be proper.
If \(Y\) is compact Hausdorff, \(U\) is compact iff \(U\) is closed, and by continuity closed sets pull back.