## Algebra and Combinatorics Seminar

**Date:** November 30, 2017

**Time:** 2:45PM - 3:45PM

**Location:** BLOC 628

**Speaker:** Cesar Galindo, Universidad de los Andes

**Title:** *Pointed finite tensor categories over abelian groups*

**Abstract:** In this talk we will give a characterization of finite pointed tensor categories obtained as de-equivariantizations of finite-dimensional pointed Hopf algebras over abelian groups only in terms of the (cohomology class of the) associator of the pointed part. As an application, we will prove that every coradically graded pointed finite braided tensor category is a de-equivariantization of a finite dimensional pointed Hopf algebras over an abelian group. This talk is base on arXiv:1707.05230, joint work with Iván Angiono.