A remark on the structure of the Auslander-Reiten quiver of orders, blocks with cyclic defect two and the Dynkin diagram \({\mathbb{E}}_ 6\)
Previously [Math. Z. 179, 407-429 (1982; Zbl 0494.20005)] the author determined up to stable equivalence the Auslander-Reiten quiver of a block of cyclic defect \(p^ 2\) for RG, where G is a finite group and R is an unramified extension of the p-adic integers. In that work, he was unable to eliminate the possibility that the tree class might be \(E_ 6\), when \(p=3\). Here, that possibility is eliminated.
scientific article; zbMATH DE number 3908669