# Seminars in Algebra

## Fall 2022

## Spring 2022

## Tuesday, March 15th, 2022, at 13:15 in room 734

**Speaker:** Hipolito Treffinger (Université de Paris)

**Title**: Two characterisations of higher torsion classes

**Abstract:** The notion of torsion classes in higher homological algebras was introduced by Jørgensen in 2016. In this talk, after recalling the definition, we will give two different characterisations of higher torsion classes: one intrinsic and another using the classical torsion classes of the ambient abelian category. Moreover we will discuss some combinatorial consequences of these results.

This talk is based on a joint work with J. Asadollahi, P. Jørgensen and S. Schroll and a joint work in progress with J. August, J. Haugland, K. Jacobsen, S. Kvamme and Y. Palu.