On possible restrictions of null and meager ideal (part 2)
יום ה', 11/05/2017 - 10:00
Ashutosh Kumar (HUJI)
Building 604, Room 103
Fremlin asked if the null ideal restricted to a non null set of reals could be isomorphic to the non stationary ideal on omega_1. Eskew asked if the null and the meager ideal could both be somewhere countably saturated. We'll show that the answer to both questions is yes. Joint work with Shelah.