Tuesday, November 24, 15:45, 7.527
Gustavo Jasso (Bonn),
A short proof of the defect formula for d-exact sequences.
We will recall Krause's proof of Auslander's defect formula. We
will introduce d-exact sequences in d-cluster-titling subcategories and give
an analogous proof of the defect formula in this setting. As an application,
we deduce the (higher) Auslander-Reiten duality formula for d-cluster-tilting