Tuesday, April 13, 14:00

Markus Thuresson (Uppsala)
The Ext-algebra of standard modules over dual extension algebras

Abstract:
We define the dual extension algebra of two directed algebras and consider the Ext-algebra of standard modules over this algebra. It turns out that this Ext-algebra is itself isomorphic to a certain dual extension algebra. We also discuss how the natural A-infinity structures on the involved Ext-algebras are related.