Skip to content

Norms on possibilities II: more ccc ideals on 2omega

Andrzej Rosłanowski, Saharon Shelah

math.LOarXiv:math/9703222

Abstract

We use the method of norms on possibilities to answer a question of Kunen and construct a ccc sigma --ideal on 2omega with various closure properties and distinct from the ideal of null sets, the ideal of meager sets and their intersection.

Create a lesson