The Ringel dual of the Auslander-Dlab-Ringel algebra

The ADR algebra RAof a finite-dimensional algebra Ais a quasihereditary algebra. In this paper we study the Ringel dual R(RA)of RA. We prove that R(RA)can be identified with (RAop)op, under certain ‘minimal’ regularity conditions for A. In particular, over algebraically closed fields the Ringel dual...