The Ext algebra of a Brauer graph algebra
Green, Edward L · Schroll, Sibylle · Snashall, Nicole · Taillefer, Rachel
Original · EN
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 K₂.
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