Completion

Abstract This work presents a new construction of algebraic completion using techniques from torsion theory and including the classical car,e of a-completion as an example. The structure of the completed rings and modules and related problems are studied in detail. *Research supported by D.G.I.C.Y.T. *Research supported by D.G.I.C.Y.T. Notes *Research supported by D.G.I.C.Y.T.