On the simplicity and subdirect irreducibility of Boolean ultrapowers
نویسندگان
چکیده
منابع مشابه
Boolean Ultrapowers, the Bukovský-dehornoy Phenomenon, and Iterated Ultrapowers
We show that while the length ω iterated ultrapower by a normal ultrafilter is a Boolean ultrapower by the Boolean algebra of Př́ıkrý forcing, it is consistent that no iteration of length greater than ω (of the same ultrafilter and its images) is a Boolean ultrapower. For longer iterations, where different ultrafilters are used, this is possible, though, and we give Magidor forcing and a general...
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ژورنال
عنوان ژورنال: Colloquium Mathematicum
سال: 1978
ISSN: 0010-1354,1730-6302
DOI: 10.4064/cm-39-2-215-218