Bulletin of the Korean Mathematical Society ( Vol.43 NO.4 / 2006 ) Title On the flatness and injectivity of dual modules (III)(ENG) Author Zhaoyong Huang MSC 13C11, 16E50 Publication Page 755-762 Page Abstract 1. Introduction 2. Main results Own Status Keyword dual modules, quasi-injective, quasi-projective, von Neumann regular rings, semisimple artinian rings Note Summary For a commutative ring $R$ and an injective cogenerator $E$ in the category of $R$-modules, we characterize von Neumann regular rings and semisimple artinian rings in terms of the properties of dual modules with respect to $E$. Attach [DVI]  [PDF]