books.google.co.uk - Over the last three decades representation theory of groups, Lie algebras and associative algebras has undergone a rapid development through the powerful tool of almost split sequences and the Auslander-Reiten quiver. Further insight into the homology of finite groups has illuminated their representation...http://books.google.co.uk/books/about/Algebra.html?id=vt1SdarTpZMC&utm_source=gb-gplus-shareAlgebra