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Sem. Topologia Alg.

 

Ringel duality


Prelegent: Agnieszka Bodzenta

2021-05-25 16:30

Quasi-hereditary algebras and, more generally, highest weight categories
first appeared as categories of perverse sheaves on a stratified topological
space. Another example is the category O of Bernstein-Bernstein-Gelfand.
In the talk I will recall the classical Ringel duality for highest weight
categories and discuss two different points of view on it; the first one
given by Koszul duality for bocses, the second by the abelian envelopes for
exact categories. This is based on joint work with J. Kuelshammer and A.
Bondal.