Title of article :
The character spectrum of
Author/Authors :
Shelah، نويسنده , , Saharon، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2011
Abstract :
We show the consistency of: the set of regular cardinals which are the character of some ultrafilter on N can be quite chaotic, in particular can have many gaps.
Keywords :
Set theory , Ultrafilters , character , Cardinal invariants , forcing
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications
