Article ID Journal Published Year Pages File Type
4661376 Topology and its Applications 2007 10 Pages PDF
Abstract

Let M be a separable metric space consisting of more than one point. We construct perfectly normal dense subspaces Z⊂Mc2 and (under additional set-theoretic assumption) Y⊂Mc which are not collectionwise Hausdorff.

Related Topics
Physical Sciences and Engineering Mathematics Geometry and Topology