Remarks on chain conditions in products
Stevo Todorčević (1985)
Compositio Mathematica
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Stevo Todorčević (1985)
Compositio Mathematica
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R. C. Solomon (1977)
Czechoslovak Mathematical Journal
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Vera Fischer, Bernhard Irrgang (2010)
Acta Universitatis Carolinae. Mathematica et Physica
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Julius Barbanel (1991)
Fundamenta Mathematicae
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W. Comfort, S. Negrepontis (1972)
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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.
Bohuslav Balcar, Petr Simon (1988)
Commentationes Mathematicae Universitatis Carolinae
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