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arXiv · 1302.6413

The Ext algebra of a Brauer graph algebra

Edward L Green·Sibylle Schroll·Nicole Snashall·Rachel Taillefer
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Abstract

In this paper we study finite generation of the Ext algebra of a Brauer graph algebra by determining the degrees of the generators. As a consequence we characterize the Brauer graph algebras that are Koszul and those that are K_2.

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BibTeXRIS

Edward L Green, Sibylle Schroll, Nicole Snashall, Rachel Taillefer. 2013-02-26. The Ext algebra of a Brauer graph algebra. https://arxiv.org/abs/1302.6413

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