Place: Fields Institute (Room 210)
Date: December 2, 2016 (13:30-15:00)
Speaker: Franklin Tall, University of Toronto
Title: On the sigma-compactness of definable Menger spaces
Abstract: In a previous seminar, we saw that an inaccessible sufficed for the consistency of “every projective Menger set of reals is sigma-compact”. The inaccessible is in fact necessary.