Tilting in Abelian Categories and Quasitilted Algebras

Tilting in Abelian Categories and Quasitilted Algebras
Author :
Publisher : American Mathematical Soc.
Total Pages : 103
Release :
ISBN-10 : 9780821804445
ISBN-13 : 0821804448
Rating : 4/5 (448 Downloads)

Book Synopsis Tilting in Abelian Categories and Quasitilted Algebras by : Dieter Happel

Download or read book Tilting in Abelian Categories and Quasitilted Algebras written by Dieter Happel and published by American Mathematical Soc.. This book was released on 1996 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: We generalize tilting with respect to a tilting module of projective dimension at most one for an Artin algebra to tilting with respect to a torsion pair in an Abelian category. Our construction is motivated by the connection between tilting and derived categories. We develop a general theory for such tilting, and are led to a generalization of tilting algebras which we call quasitilted algebras. This class also contains the canonical algebras, and we show that the quasitilted algebras are characterized by having global dimension at most two and each indecomposable module having projective dimension at most one or injective dimension at most one. We also give other characterizations of quasitilted algebras, and give methods for constructing such algebras.


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