Title of article :
On the relative strength of forms of compactness of metric spaces and their countable productivity in ZF
Author/Authors :
Keremedis، نويسنده , , Kyriakos، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2012
Abstract :
We show in ZF that:(i)
tably compact metric space need not be limit point compact or totally bounded and, a limit point compact metric space need not be totally bounded.
lete, totally bounded metric space need not be limit point compact or Cantor complete.
or complete, totally bounded metric space need not be limit point compact.
nd countable, limit point compact metric space need not be totally bounded or Cantor complete.
entially compact, selective metric space (the family of all non-empty open subsets of the space has a choice function) is compact.
table product of sequentially compact (resp. compete and totally bounded) metric spaces is sequentially compact (resp. compete and totally bounded).
Keywords :
COMPACT , Countably compact , Cantor complete , Totally bounded metric spaces , complete , AXIOM OF CHOICE , Countable Tychonoff products , Loeb , selective , Sequentially compact
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications