June 2017

Aleksander Cieślak: Cohen-stable families of subsets of integers

Tuesday, June 13, 2017 17:15

Room: D1-215

Speaker:
Aleksander Cieślak

Title: Cohen-stable families of subsets of integers

Abstract. A mad family is Cohen-stable if it remains maximal in any Cohen generic extension. Otherwise it is Cohen-stable. We will find condition necessary and sufficient for mad family to be Cohen-unstabe and investigate when such family exist.