TY  - BOOK
AU  - Yasser Fathi Ibrahim Abdelwahab
AU  - Ismail Abdelrahman Amin , 
AU  - Mohamed Fouad Yousif , 
TI  - On projective modules and quasi-frobenius rings / 
PY  - 2012///
CY  - Cairo : 
PB  - Yasser Fathi Ibrahim Abdelwahab , 
KW  - Injective and projective modules
KW  - Rad-projective and strongly rad-projective modules
KW  - Soc-injective modules
N1  - Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Mathematics; Issued also as CD
N2  - Injective modules and their dual projective modules play a central role in the theory of rings and modules. Both notions are used to characterize semisimple artinian rings. a class of rings that is easily described in the literature as direct sums of matrix rings over division rings. While, a result of eckmann and schopf asserts that, every right R-module M can be embedded in an injective envelope (hull) of M, the situation is different when it comes to projective modules
ER  -