The Poincare-Birkhoff-Witt theorem for quadratic algebras of Koszul type
Alexander Braverman, Dennis Gaitsgory
Abstract
In this paper we discuss a generalization of the classica PBW-theorem to the case of Koszul algebras. Our result is a slight generalization of that obtained by A.Polischuk and L.Positselsky, but the proof is different and uses deformation theory.
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