Quadratic forms associated to stratifying systems

dc.contributor.author	Marcos, EDN
dc.contributor.author	Mendoza, O
dc.contributor.author	Saenz, C
dc.contributor.author	Zuazua Vega, Rita Esther
dc.date.accessioned	2011-01-22T10:26:21Z
dc.date.available	2011-01-22T10:26:21Z
dc.date.issued	2006
dc.identifier.issn	0021-8693
dc.identifier.uri	http://hdl.handle.net/11154/1226
dc.description.abstract	Let R be an algebra, and let (theta, <=) be a stratifying system of R-modules. If the category) F(theta) is theta-directing, then we prove that ind F(theta) is finite. In order to do that, we introduce a quadratic form q(theta) which depends on theta. Moreover, we also give sufficient conditions to get the correspondence X -> dim(theta)X from ind F(theta) to the set of positive roots of q(theta). (c) 2006 Elsevier Inc. All rights reserved.	en_US
dc.language.iso	en	en_US
dc.title	Quadratic forms associated to stratifying systems	en_US
dc.type	Article	en_US
dc.identifier.idprometeo	1284
dc.identifier.doi	10.1016/j.jalgebra.2006.05.017
dc.source.novolpages	302(2):750-770
dc.subject.wos	Mathematics
dc.description.index	WoS: SCI, SSCI o AHCI
dc.subject.keywords	standardly stratified algebras
dc.subject.keywords	quadratic forms
dc.subject.keywords	stratifying systems
dc.relation.journal	Journal of Algebra