Middle Diamond

by Shelah. [Sh:775]
Archive for Math Logic, 2005
Under some cardinal arithmetic assumptions, we prove that many stationary subsets of lambda of a right cofinality has the ``middle diamond''. In particular, for many regular kappa for every large enough regular lambda we have the middle diamond on {delta < lambda : cf (delta)= kappa} . This is a strong negation of uniformization.

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