Menger and Hurewicz spaces: products and applications to forcing.

Seminar: 
Topologia
Osoba referująca: 
Lyubomyr Zdomskyy (KGRC, Wiedeń)
Seminar item date: 
Tuesday, 26. May 2020 - 17:00
Sala: 
zoom.us (contact pborod@math.uni.wroc.pl)
Abstract: 
This talk will be devoted to (products of) Menger and Hurewicz spaces and their connections to forcing and mad families. In particular, we shall show that in the Laver model, each mad family can be destroyed by a ccc poset preserving the ground model reals unbounded and splitting. It is an important open problem whether the same follows from CH.