An introduction to generalized descriptive set theory, part 3

Seminar

Speaker

Miguel Moreno (BIU)

Date

07/01/2019 - 15:00 - 13:00Add to Calendar 2019-01-07 13:00:00 2019-01-07 15:00:00 An introduction to generalized descriptive set theory, part 3 After introducing the notions of $\kappa$-Borel class, $\kappa$-$\Delta_1^1$ class, $\kappa$-Borel^* class we saw some subset relations between them in the previous talk ( http://u.math.biu.ac.il/~morenom3/GDST-2018.pdf ). We finished the previous talk with a sketch of the proof of: if V=L, then $\kappa$-Borel* class is equal to the $\Sigma1^ 1(\kappa)$ class. We will see this proof in complete detail, starting from the key lemma, Lemma 1.13 on the notes. Building 605, Room 13 אוניברסיטת בר-אילן - Department of Mathematics mathoffice@math.biu.ac.il Asia/Jerusalem public

Place

Building 605, Room 13

Abstract

After introducing the notions of $\kappa$-Borel class, $\kappa$-$\Delta_1^1$ class, $\kappa$-Borel^* class we saw some subset relations between them in the previous talk ( http://u.math.biu.ac.il/~morenom3/GDST-2018.pdf ). We finished the previous talk with a sketch of the proof of:

if V=L, then $\kappa$-Borel* class is equal to the $\Sigma1^ 1(\kappa)$ class.

We will see this proof in complete detail, starting from the key lemma, Lemma 1.13 on the notes.