שלחו לחבר

An introduction to generalized descriptive set theory, part 2

Seminar
Speaker
Miguel Moreno (BIU)
Date
31/12/2018 - 15:00 - 13:00
Place
Building 605, Room 13
Abstract

After introducing the notions of $\kappa$-Borel class, $\kappa$-$\Delta_1^1$ class, $\kappa$-Borel^* class in the previous talk ( http://u.math.biu.ac.il/~morenom3/GDST-2018.pdf ), in this talk, we will show the relation between this classes.
In descriptive set theory the Borel class, the $\Delta_1^1$ class, the Borel* class are the same class, this doesn't hold in the generalized descriptive set theory, in particular under the assumption V=L the Borel* class is equal to the $\Sigma1^ 1$ class.

תאריך עדכון אחרון : 17/12/2018