Intermediate Models of Magidor-Radin Forcing- Part II

preprint2022arXivOpen access

Abstract

We continue the work done by the authors and before that by the second author, Kanovei and koepke. We prove that for every set of ordinals AA in a Magidor-Radin generic extension using a coherent sequence such that oU⃗(κ)<κ+o^{\vec{U}}(κ)<κ^+, there is C′⊆CGC'\subseteq C_G, such that V[A]=V[C′]V[A]=V[C']. Also we prove that the supremum of a fresh set in a Prikry, tree Prikry, Magidor, Radin-Magidor and Radin forcing, changes cofinality to ωω.

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