Asymptotic aspects of torsion and cotorsion

Abstract: This is joint work with Jeremy Russell. In this expository talk, I will recall the new concepts of torsion and cotorsion, as expounded in our earlier work, and introduce their asymptotic counterparts. Our construction is applicable to any ring. Using the (co)completeness of the category of finitely presented functors, I will give an explicit description of the right-derived functors of torsion over Artin algebras. All concepts related to functors will be defined and explained.

combinatoricscategory theoryrings and algebrasrepresentation theory

Audience: researchers in the topic

( slides )

Sherbrooke Meeting on Representation Theory of Algebras, Corona Edition (fully online)

Series comments: Please contact Thomas Brüstle or Juan Carlos Bustamante if you are interested to participate.