Cofinal Families of Compact Subsets of an Analytic Set
نویسندگان
چکیده
منابع مشابه
Analytic Ideals and Cofinal Types
We study the class of analytic ideals on the set of natural numbers ordered under Tukey reducibility. We consider mostly structural issues: characterization of ideals which are Tukey above w”‘, extremal elements for the class of analytic P-ideals, etc. We prove that this class is very rich by embedding into it (P(N), (I,). We also study ideals associated to classical Banach spaces and ideals of...
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1989
ISSN: 0002-9939
DOI: 10.2307/2047445