Perfect category-graded algebras

Abstract

In a perfect category every object has a minimal projective resolution. We give a criterion for the category of modules over a categorygraded algebra to be perfect.

A sufficient condition is replaced by a criterion. Several references added. 17 pages

References in corpus (1)

• The Kostant form of $\mathfrak{U}(s{l}_n^{+})$ and the Borel subalgebra of the Schur algebra S(n,r)