Cardinal functions on compact F-spaces and on weakly countably complete Boolean algebras
Eric van Douwen (1981)
Fundamenta Mathematicae
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Displaying similar documents to “On collections of almost disjoint families”
Cardinal functions on compact F-spaces and on weakly countably complete Boolean algebras
σ-Entangled linear orders and narrowness of products of Boolean algebras
Saharon Shelah (1997)
Fundamenta Mathematicae
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We investigate σ-entangled linear orders and narrowness of Boolean algebras. We show existence of σ-entangled linear orders in many cardinals, and we build Boolean algebras with neither large chains nor large pies. We study the behavior of these notions in ultraproducts.
On saturated almost disjoint families
András Hajnal, István Juhász, Lajos Soukup (1987)
Commentationes Mathematicae Universitatis Carolinae
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Strong decomposability of ultrafilters on cardinals with countable cofinality
Petr Simon (1984)
Acta Universitatis Carolinae. Mathematica et Physica
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