Tuesday, December 3, 15:15, 7.527

Maitreyee Kulkarni (Bonn), Infinite friezes and triangulations of an annulus.

Abstract:
In this talk I will introduce a combinatorial object called a frieze and describe its relations to triangulations and to representations of certain quivers. In particular, we will see that each periodic infinite frieze determines a triangulation of an annulus in a unique way. We will also study associated module categories and determine an invariant of friezes in terms of modules. This is joint work with Karin Baur, Ilke Canakci, Karin Jacobsen, and Gordana Todorov.