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On changing cofinality of partially ordered sets
Journal of Symbolic Logic 75 (2):641-660 (2010)
Abstract
It is shown that under GCH every poset preserves its confinality 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 constructedOther Versions
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