ALMOST PRINCIPALLY SMALL INJECTIVE RINGS 1. Introduction Let R be a ring. A right ideal I
of R is called small if, for every pro Page 1 J. Korean Math. Soc. 48 (2011), No. 6, pp. 1189–1201 …

Let $ R $ be a ring and $ M $ a right $ R $-module, $ S={\rm End} _R (M) $. The module $ M
$ is called almost principally small injective (or $ APS $-injective for short) if, for any $ a\in J …

Let R be a ring and M a right R-module, S= EndR (M). The module M is called almost
principally small injective (or APS-injective for short) if, for any a∈ J (R), there exists an S …

Let R be a ring and M a right R-module, S= EndR (M). The module M is called almost
principally small injective (or APS-injective for short) if, for any a∈ J (R), there exists an S …

Let R be a ring and M a right R-module, S= $ End_R $(M). The module M is called almost
principally small injective (or APS-injective for short) if, for any a ${\in} $ J (R), there exists an …

Let $ R $ be a ring and $ M $ a right $ R $-module, $ S={\rm End} _R (M) $. The module $ M
$ is called almost principally small injective (or $ APS $-injective for short) if, for any $ a\in J …