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Square principles in ℙmax extensions
Published Web Location
https://doi.org/10.1007/s11856-017-1444-8Abstract
By forcing with Pmax over strong models of determinacy, we obtain models where different square principles at ω2 and ω3 fail. In particular, we obtain a model of 2ℵ0=2ℵ1=ℵ2+¬◻(ω2)+¬◻(ω3).
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