Divorces in the PFA family

15.04.2010 15:00 - 16:30

M. A. Mota (U Wien)

Using some variants of weak club guessing we separate some fragments of the proper forcing axiom: we show that for every two indecomposable ordinals α < β, the forcing axiom for the class of all the β-proper posets does not imply the bounded forcing axiom for the class of all the α-proper posets. This is joint work with S. Friedman and M. Sabok.

Organiser:

KGRC

Location:
SR 101, 2. St., Währinger Str. 25