Tuesday, April 13, 14:00
Markus Thuresson (Uppsala)
The Ext-algebra of standard modules over dual extension algebras
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.