ON RESTRICTIONS OF ULTRAFILTERS FROM GENERIC EXTENSIONS TO GROUND MODELS

Autor: MOTI GITIK, EYAL KAPLAN
Rok vydání: 2022
Předmět:
Zdroj: The Journal of Symbolic Logic. 88:169-190
ISSN: 1943-5886
0022-4812
DOI: 10.1017/jsl.2022.26
Popis: Let P be a forcing notion and $G\subseteq P$ its generic subset. Suppose that we have in $V[G]$ a $\kappa{-}$ complete ultrafilter1,2W over $\kappa $ . Set $U=W\cap V$ .
Databáze: OpenAIRE