The consistency strength of NFUB

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Publication:6502093

arXivmath/9707207MaRDI QIDQ6502093

Robert M. Solovay


Abstract: We show that the consistency strength of the system NFUB, a variant of Quine's "New Foundations" recently introduced by Randall Holmes, is precisely that of [ZFC - Power Set] + "There is a weakly compact cardinal. This is a preliminary draft of the paper. Nevertheless, it contains a complete proof.












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