Category:Properties of subspaces in topological spaces

This is a category of properties for the following kind of objects: subspace of a topological spaces. In other words, this category lists subspace of a topological space properties

This category lists properties of subspaces in topological spaces, i.e. rules that associate, to a pair of a topological space and a subspace, either a True or a False, in a manner that is invariant under homeomorphisms.