THE COMBINATORICS OF TENSOR PRODUCTS OF HIGHER AUSLANDER ALGEBRAS OF TYPE A

Abstract

Abstract We consider maximal non- l -intertwining collections, which are a higher-dimensional version of the maximal non-crossing collections which give clusters of Plücker coordinates in the Grassmannian coordinate ring, as described by Scott. We extend a method of Scott for producing such collections, which are related to tensor products of higher Auslander algebras of type A . We show that a higher preprojective algebra of the tensor product of two d -representation-finite algebras has a d -precluster-tilting subcategory. Finally, we relate mutations of these collections to a form of tilting for these algebras.