Transferring saturation, the finite cover property, and stability

Citation
Jt. Baldwin et al., Transferring saturation, the finite cover property, and stability, J SYMB LOG, 64(2), 1999, pp. 678-684
Citations number
6
Categorie Soggetti
Mathematics
Journal title
JOURNAL OF SYMBOLIC LOGIC
ISSN journal
00224812 → ACNP
Volume
64
Issue
2
Year of publication
1999
Pages
678 - 684
Database
ISI
SICI code
0022-4812(199906)64:2<678:TSTFCP>2.0.ZU;2-O
Abstract
Saturation is (mu, kappa)-transferable in T if and only if there is an expa nsion T-1 of T with \T\ = \T\ such that if M is a mu-saturared model of T-1 and \M\ greater than or equal to kappa then the reduct M/L(T) is -saturate d. We characterize theories which are superstable without f.c.p.. or withou t f.c.p. as, respectively those where saturation is (N-0, lambda)-transfera ble or (kappa(T), lambda)-transferable for all lambda. Further if for some mu greater than or equal to \T\,2(mu) > mu(+), stability is equivalent to f o. all mu greater than or equal to \T\, saturation is (mu, 2(mu))-transfera ble.