Representations of algebras : proceedings of the conference held in São Paulo (1999)

This volume contains the proceedings of the Conference on Representations of Algebras - Sao Paulo (CRASP), held at the Instituto de Matematica e Estatistica of the Universidade de Sao Paulo, Brazil. It discusses Hopf, tubular, quasischurian, wild hereditary, concealed-canonical Artin, Brauer star, and Koszul algebras. This collection contains proceedings of the Conference on Representations of Algebras-Sao Paulo (CRASP) held at the Instituto de Matematica e Estatistica of the Universidade de Sao Paulo, Brazil, discussing Hopf, tubular, quasischurian, wild hereditary, concealed-canonical Artin, Brauer star, Koszul, and quasitilted algebras -- highlighting selfinjective algebras of euclidean type with almost regular nonperiodic Auslander-Reiten components. Containing papers selected from over 70 participants representing 17 countries, Representations of Algebras considers the existence of almost split morphisms and sequences...describes strongly simply connected derived tubular algebras...explores relationships between Koszul algebras and the Gorenstein condition...characterizes hereditary noetherian categories containing simple objects...details coil algebras whose repetitive algebra is tame...analyzes Hopf algebras...and more. ABSTRACT We discuss the existence of left and right almost split morphisms for a skeletally small category M of modules over an arbitrary ring R.