%0 Journal Article
%T The Yoneda algebra of a graded Ore extension
%A Christopher Phan
%J Mathematics
%D 2010
%I arXiv
%R 10.1080/00927872.2010.539584
%X Let A be a connected-graded algebra with trivial module k, and let B be a graded Ore extension of A. We relate the structure of the Yoneda algebra E(A) := Ext_A(k,k) to E(B). Cassidy and Shelton have shown that when A satisfies their K_2 property, B will also be K_2. We prove the converse of this result.
%U http://arxiv.org/abs/1002.2318v1