The size of (T)over-tilde

Authors
Larson, P
Citation
P. Larson, The size of (T)over-tilde, ARCH MATH L, 39(7), 2000, pp. 541-568
Citations number
20
Categorie Soggetti
Mathematics
Journal title
ARCHIVE FOR MATHEMATICAL LOGIC
ISSN journal
09335846 → ACNP
Volume
39
Issue
7
Year of publication
2000
Pages
541 - 568
Database
ISI
SICI code
0933-5846(200010)39:7<541:TSO(>2.0.ZU;2-R
Abstract
Given a stationary subset T of omega (1), let (T) over tilde be the set of ordinals in the interval (omega (1) omega (2)) which are necessarily in the image of T by any embedding derived from the nonstationary ideal. We consi der the question of the size of (T) over tilde, given T, and use Martin's M aximum and P-max to give some answers.