| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4659962 | Topology and its Applications | 2012 | 4 Pages |
Abstract
Let μ and ν be two ordinals. If X is a subspace of μ×ν, then X is dually discrete. This gives a positive answer to a question of Alas, Junqueira and Wilson. By this conclusion and a known conclusion we show that a subspace Y of μ×ν has countable spread if and only if the space Y is hereditarily a Lindelöf D-space.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
