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Ideals of nowhere Ramsey sets are isomorphic
Published online by Cambridge University Press: 12 March 2014
Abstract
We introduce a notion of ideal type such that any two ideals with the same ideal type are isomorphic. From this we infer, under the axiom t = h, that each ideal which consists of all nowhere Ramsey sets contained in some family of infinite subsets of natural numbers is isomorphic with the ideal of all nowhere Ramsey sets.
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- Copyright © Association for Symbolic Logic 1994
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