ALMOST ASTERISK-MODULES NEED NOT BE FINITELY GENERATED

Authors
Citation
J. Trlifaj, ALMOST ASTERISK-MODULES NEED NOT BE FINITELY GENERATED, Communications in algebra, 21(7), 1993, pp. 2453-2462
Citations number
16
Categorie Soggetti
Mathematics, Pure",Mathematics
Journal title
ISSN journal
00927872
Volume
21
Issue
7
Year of publication
1993
Pages
2453 - 2462
Database
ISI
SICI code
0092-7872(1993)21:7<2453:AANNBF>2.0.ZU;2-2
Abstract
We construct examples of infinitely generated almost -modules, i.e. o f infinitely generated small modules satisfying the Colpi's condition C(kappa) for all kappa < N0. We also prove that the examples are shrin kable (in the sense of Facchini and Salce). Hence, they do not satisfy C(N0), and they are not -modules. This implies that the possible sol ution of the open problem whether each -module is finitely generated depends substantially on the validity of C(kappa) for infinite cardina ls kappa.