Modules Over the Endomorphism Ring of a Finitely Generated Projective Module

Rigid Resolution of a Finitely Generated Module Over a Regular Local Ring

Projectivity and flatness over the endomorphism ring of a finitely generated module

Let A be a ring, and Λ a finitely generated A-module. We give necessary and sufficient conditions for projectivity and flatness of a module over the endomorphism ring of Λ.

Ring With All Finitely Generated Modules Retractable

Non-finitely Generated Projective Modules over Generalized Weyl Algebras

We classify infinitely generated projective modules over generalized Weyl algebras. For instance, we prove that over such algebras every projective module is a direct sum of finitely generated modules.

rigid resolution of a finitely generated module over a regular local ring