Reduced and coreduced modules with respect to inverse families of ideals
Let R be a commutative ring and Phi an inverse family of ideals with greatest proper member L. We introduce and study Phi reduced and Phi coreduced modules, extending the corresponding notions for powers of a single ideal. We show that, on these classes of modules, the generalized torsion and completion functors associated with Phi are determined by L. We establish characterizations and closure properties of these modules and obtain a Greenlees May type adjunction and a Matlis Greenlees May type characterization. When Phi is a system of ideals, we further investigate the radicality of the generalized torsion functor and derive associated torsion theories on suitable Serre subcategories. These results provide a module theoretic framework for studying generalized torsion and completion with respect to families of ideals