Martin’s Maximum, saturated ideals and non-regular ultrafilters, Part II

Abstract

We prove, assuming the existence of a huge cardinal, the consistency of fully non-regular ultrafilters on the successor of any regular cardinal. We also construct ultrafilters with ultraproducts of small cardinality. Part II is logically independent of Part I.

Authors

Matthew Foreman

Menachem Magidor

Saharon Shelah