机构地区: 江西师范大学物理与通信电子学院
出 处: 《江西师范大学学报(自然科学版)》 2006年第5期466-469,共4页
摘 要: 研究可补半环上的内射半模与投射半模性质.得到:若S为可补半环,则任意左S-半模必存在内射包;左S-内射半模必是S-模;每一个左S-半模必是P-内射半模;Γ-内射当且仅当S-内射;最后证明可补半环必是rPP半环. In this paper we discuss injective semimodules and projective semimodules over complemented semirings. It is proved that any semimodule over complemented semirings must have a ξs- injective hull, complemented semirings must be rPP semirings and the endomorphism semiring of every principal right ideal is still a complemented semiring.