On perfect pre-images of ω1
Countable tightness, Pre-images of ω 1, Proper forcing axiom, Totally proper forcing
Topology and its Applications
We show that PFA implies that every perfect pre-image of ω1 of countable tightness contains a closed copy of ω1. © 2001 Elsevier Science B.V. All rights reserved.
Original Publication Date
DOI of published version
Eisworth, Todd, "On perfect pre-images of ω1" (2002). Faculty Publications. 3375.