Let R be a ring. We study the definability of the class of SAS -flat right R -modules. Moreover, we give many properties and characterizations of the definability of this class.
机构:
Univ London Queen Mary & Westfield Coll, Sch Math Sci, London E1 4NS, EnglandUniv London Queen Mary & Westfield Coll, Sch Math Sci, London E1 4NS, England