Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Annals of the New York Academy of Sciences
767 (1995), S. 0
ISSN:
1749-6632
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Natural Sciences in General
Notes:
: We construct an ultrafilter u∞Ω*=βω−ω such that the subspace ω*− {u} is not absolutely countably compact, and we show that under the continuum hypothesis, for every u∞βω−ω, the subspace ω*− {u} is not absolutely countably compact.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1749-6632.1995.tb55903.x
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