The seminar meets on Wednesday January 17th at 11:00 in the Institute of
Mathematics CAS, Zitna 25, seminar room, 3rd floor, front building.
Program: Egbert Thümmel — Ramsey analytic ideals
It is an open problem whether analytic tall ideals can be Ramsey. We
show that this is connected to another problem of Hrušák: If an analytic
tall Ramsey ideal exists, then it is nowhere Katětov above the ideal
conv and has no F-sigma extension.