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On changing cofinality of partially ordered sets
Published online by Cambridge University Press: 12 March 2014
Abstract
It is shown that under GCH every poset preserves its cofinality in any cofinality preserving extension. On the other hand, starting with ω measurable cardinals, a model with a partial ordered set which can change its cofinality in a cofinality preserving extension is constructed.
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- Copyright © Association for Symbolic Logic 2010