Title of article :
A non-D-space with large extent
Author/Authors :
Ishiu، نويسنده , , Tetsuya، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2008
Abstract :
We proved that ⋄ + implies the existence of a non-D-space whose all closed subspace F satisfies e ( F ) = L ( F ) . The existence of such a space under MA + ¬ CH or PFA is also discussed.
Keywords :
D-space , Lindel?f , Extent , ? + , Martinיs axiom , Proper forcing axiom
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications
