On the sigma-compactness of definable Menger spaces
    Speaker: 
  
  
  
      Franklin Tall, University of Toronto  
Date and Time: 
Friday, December 2, 2016 - 1:30pm to 3:00pm
Location: 
Fields Institute, Room 210
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.

