Faculty Publications

Title

On perfect pre-images of ω1

Document Type

Article

Keywords

Countable tightness, Pre-images of ω 1, Proper forcing axiom, Totally proper forcing

Journal/Book/Conference Title

Topology and its Applications

Volume

125

Issue

2

First Page

263

Last Page

278

Abstract

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

11-10-2002

DOI of published version

10.1016/S0166-8641(01)00280-2

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