Relative Ext groups, resolutions, and Schanuel classes

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dc.creatorHolm, Henrik
dc.date2006-10-27
dc.date.accessioned2026-07-07T07:29:32Z
dc.date.available2026-07-07T07:29:32Z
dc.descriptionGiven a precovering (also called contravariantly finite) class F there are three natural approaches to a homological dimension with respect to F: One based on Ext functors relative to F, one based on F-resolutions, and one based on Schanuel classes relative to F. In general these approaches do not give the same result. In this paper we study relations between the three approaches above, and we give necessary and sufficient conditions for them to agree.
dc.description17 pages
dc.identifierhttps://arxiv.org/abs/math/0610844
dc.identifierhttp://arxiv.org/abs/math/0610844
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/118145
dc.subjectRings and Algebras
dc.subject16B50, 16E10, 16E30
dc.titleRelative Ext groups, resolutions, and Schanuel classes
dc.typetext

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