Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4660453 | Topology and its Applications | 2009 | 5 Pages |
Abstract
In this note, we show that if X is the union of a finite collection of weak -refinable subspaces and e(X)=ω, then X is a Lindelöf space. We also show that the product of two ordinals is dually discrete. The last conclusion gives a positive answer to a question of Alas, Junqueira and Wilson.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology