Throughout this thesis R denotes a ring with unit element 1*0 and all left or right R-modules considered are unitary in the sense 1 x = x or xl=x for every element x of a left or right R-module M. The category of left R-modules denoted by R-mod and the ca
Description:
Thesis (M.S.)-- American University of Beirut. Department of Mathematics, 1992.;"Advisor: Azmi Hanna, Professor, Mathematics -- Member of Committee: Ahmad Shamsuddin, Associate Professor of Mathematics."
