Fields institute,Room 210
Speaker: Andreas Blass
Title: The next best thing to a P-point
Abstract: I’ll present a couple of examples of ultrafilters that are not P-points but have the strongest weak (i.e., square-bracket, exponent 2) partition property that is possible for non-P-points. The two examples differ in other respects, one of which shows a curious aspect of forcing. I plan to also summarize preliminary definitions and results, to place these examples in context.