CLASSIFICATION OF SYMMETRIC SPECIAL BISERIAL ALGEBRAS WITH AT MOST ONE NON-UNISERIAL INDECOMPOSABLE PROJECTIVE

We consider a natural generalization of symmetric Nakayama algebras, namely, symmetric special biserial algebras with at most one non-uniserial indecomposable projective module. We describe the basic algebras explicitly by quiver and relations, then classify them up to derived equivalence and up to stable equivalence of Morita type. This includes the weakly symmetric algebras of Euclidean type (A) over tilde (n), as studied by Bocian et al., as well as some algebras of dihedral type.