Thomas Cassidy – Cassidy, Thomas. “Modules with Pure Resolutions over Koszul Algebras Revisited.” Journal of Algebra and Its Applications 15, no. 2 (2016) : 50035-50035.

Thomas Cassidy, Professor of Mathematics

I construct a Koszul algebra A and a finitely generated graded A-module M that together form a counterexample to a recently published claim. M is generated in degree 0 and has a pure resolution, and the graded Jacobson radical of the Yoneda algebra of A does not annihilate the Ext module of M, but nonetheless M is not a Koszul module.

Cassidy, Thomas. “Modules with Pure Resolutions over Koszul Algebras Revisited.” Journal of Algebra and Its Applications 15, no. 2 (2016) : 50035-50035.

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