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A product forcing model in which the Russell-nontypical sets satisfy ZFC strictly between HOD and the universe
- Publication Year :
- 2021
-
Abstract
- A set is nontypical in the Russell sense, if it belongs to a countable ordinal definable set. The class HNT of all hereditarily nontypical sets satisfies all axioms of ZF and the double inclusion HOD $\subseteq$ HNT $\subseteq$ V holds. Solving a problem recently proposed by Tzouvaras, a generic extension L$[a,x]$ of L, by two reals $a,x$, is presented in which L=HOD $\subsetneqq$ L$[a]$=HNT $\subsetneqq$ V=L$[a,x]$, so that HNT is a model of ZFC strictly between HOD and the universe.<br />Comment: arXiv admin note: substantial text overlap with arXiv:2111.07654
- Subjects :
- Mathematics - Logic
03E35, 03E15
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2111.13491
- Document Type :
- Working Paper