Construction of Rank $2$ Indecomposable Modules in Grassmannian Cluster Categories

Karin Baur, Dusko Bogdanic, Jian-Rong Li

The category $\mathrm{CM}(B_{k,n})$ of Cohen-Macaulay modules over a quotient $B_{k,n}$ of a preprojective algebra provides a categorification of the cluster algebra structure on the…