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Quasitilted algebras have preprojective components Ole Enge (2000) Colloquium Mathematicae We show that a quasitilted algebra has a preprojective component. This is proved by giving an algorithmic criterion for the existence of preprojective components.
Quillen cohomology and Baues-Wirsching cohomology of algebraic, theories M. Jibladze, T. Pirashvili (2006) Cahiers de Topologie et Géométrie Différentielle Catégoriques