2 CARDINAL VERSIONS OF DIAMOND

Authors
Citation
Hd. Donder et P. Matet, 2 CARDINAL VERSIONS OF DIAMOND, Israel Journal of Mathematics, 83(1-2), 1993, pp. 1-43
Citations number
23
Categorie Soggetti
Mathematics, General",Mathematics
ISSN journal
00212172
Volume
83
Issue
1-2
Year of publication
1993
Pages
1 - 43
Database
ISI
SICI code
0021-2172(1993)83:1-2<1:2CVOD>2.0.ZU;2-E
Abstract
Roughly speaking, lozenge(kappa,lambda) asserts the existence of a seq uence of size < kappa sets that captures every subset of lambda on a s tationary set. The paper is devoted to the study of lozenge(kappa,lamb da) and related principles, which are for instance obtained by conside ring sequences of larger sets, or by requesting the simultaneous captu re of many subsets of lambda. Our main result is that lozenge(kappa,la mbda) holds in case lambda > 2(<kappa).