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Showing 1 to 1 of 1 for “"class forcing"”.
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The Structure of Models of Second-order Set Theories
… They showed that every model of KM plus the Class Collection schema “unrolls” to a model of ZFC<sup>−</sup> with a largest cardinal. I calculate the theories of the unrolling for a variety of second-order set theories, going as weak as GBC + ETR. I also show that being T-realizable goes down …