The Preprojective Algebra of a Quiver

  • C. M. Ringelby
  • Published 1997
The preprojective algebra P k (Q) of a quiver Q plays an important role in mathematics. We are going to present some descriptions of these algebras and their module categories which seem to be well-accepted by the experts, but for which we were unable to nd complete proofs in the literature. In particular, we determine the bre of the forgetful functor from… (More)