Mittag-Leffler conditions on modules
Angeleri Hügel, Lidia (Universit'a degli Studi dell'Insubria. Dipartimento di Informatica e Comunicazione)
Herbera i Espinal, Dolors (Universitat Autònoma de Barcelona. Departament de Matemàtiques)

Date:	2008
Abstract:	We study Mittag-Leffler conditions on modules providing relative versions of classical results by Raynaud and Gruson. We then apply our investigations to several contexts. First of all, we give a new argument for solving the Baer splitting problem. Moreover, we show that modules arising in cotorsion pairs satisfy certain Mittag-Leffler conditions. In particular, this implies that tilting modules satisfy a useful finiteness condition over their endomorphism ring. In the final section, we focus on a special tilting cotorsion pair related to the pure-semisimplicity conjecture.
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; Versió publicada
Subject:	Mittag-Leffler inverse system ; Cotorsion pairs ; Tilting modules ; Baer
Published in:	Indiana University mathematics journal, Vol. 57, No. 5 (2008) , p. 2459-2517, ISSN 0022-2518

DOI: 10.1512/iumj.2008.57.3325

59 p, 500.3 KB

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