Place: Fields Institute (Room 210)
Date: February 9, 2018 (13:30-15:00)
Speaker: Frank Tall
Title: Co-analytic spaces, K-analytic spaces, and definable versions of Menger’s conjecture
Abstract: I will not assume knowledge from my previous talks on this subject. We define co-K-analytic spaces and provide evidence that this is the “correct generalization” of ‘co-analytic’ to non-metrizable spaces. As before, we view the classic work of Rogers and Jayne on analytic sets through the lens of
Arhangel’skii’s work on generalized metric spaces, while we investigate the question of whether definable Menger spaces are sigma-compact.