Strongly almost disjoint sets and weakly uniform bases
نویسندگان
چکیده
منابع مشابه
Strongly Almost Disjoint Sets and Weakly Uniform Bases
A combinatorial principle CECA is formulated and its equivalence with GCH + certain weakenings of 2λ for singular λ is proved. CECA is used to show that certain “almost point-< τ” families can be refined to point-< τ families by removing a small set from each member of the family. This theorem in turn is used to show the consistency of “every first countable T1-space with a weakly uniform base ...
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ژورنال
عنوان ژورنال: Transactions of the American Mathematical Society
سال: 2000
ISSN: 0002-9947,1088-6850
DOI: 10.1090/s0002-9947-00-02599-x