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1997 | 152 | 1 | 21-41
Tytuł artykułu

Extending real-valued functions in βκ

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Warianty tytułu
Języki publikacji
An Open Coloring Axiom type principle is formulated for uncountable cardinals and is shown to be a consequence of the Proper Forcing Axiom. Several applications are found. We also study dense C*-embedded subspaces of ω*, showing that there can be such sets of cardinality $\got c$ and that it is consistent that ω*\{p} is C*-embedded for some but not all p ∈ ω*.
Słowa kluczowe
  • Department of Mathematics, York University, North York, Ontario, Canada M5S 1A1
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