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The two-cardinals transfer property and resurrection of supercompactness
Authors:Shai Ben-David  Saharon Shelah
Institution:Department of Computer Science, Technion-Israel Institute of Technology, Haifa, Israel ; Department of Mathematics, The Hebrew University, Jerusalem, Israel
Abstract:We show that the transfer property $(\aleph _1,\aleph _0)\to (\lambda ^+,\lambda )$ for singular $\lambda $ does not imply (even) the existence of a non-reflecting stationary subset of $\lambda ^+$. The result assumes the consistency of ZFC with the existence of infinitely many supercompact cardinals. We employ a technique of ``resurrection of supercompactness'. Our forcing extension destroys the supercompactness of some cardinals; to show that in the extended model they still carry some of their compactness properties (such as reflection of stationary sets), we show that their supercompactness can be resurrected via a tame forcing extension.

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