Title of article :
Discretely weak P-sets
Author/Authors :
Dow، نويسنده , , Alan and Techanie، نويسنده , , Geta، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2009
Abstract :
A discretely weak P-set is a nowhere dense closed set which is disjoint from the closure of any countable discrete subset of its complement. We show that the Stone–Čech remainder N ∗ of the discrete space N of natural numbers cannot be covered by discretely weak P-sets when the continuum hypothesis is assumed.
Keywords :
Nowhere dense closed sets , Weak P-set , Discretely weak P-set , Stone–?ech compactification , Continuum hypothesis , Covering
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications