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Showing 2004 · math.RAShow all
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math.RA2004
Symmetry theorems for Ext vanishing
Peter Jorgensen
It was proved by Avramov and Buchweitz that if A is a commutative local complete intersection ring with finitely generated modules M and N, then the Ext groups between M and N vani…
math.RA2004★ 5 cited
Multiplicative preprojective algebras, middle convolution and the Deligne-Simpson problem
William Crawley-Boevey, Peter Shaw
We introduce a family of algebras which are multiplicative analogues of preprojective algebras, and their deformations, as introduced by M. P. Holland and the first author. We show…