拟内射半模与伪内射半模
Quasi-Injective and Pseudo-Injective Semimodule

利用半模理论对半模的拟内射性和伪内射性进行了研究,得出了拟内射半模和Hom函子的关系；同时在半模中引入拟内射盖,并且获得了一些性质.
By the semimodular theory, the properties of quasi-injective and pseudo-injective to semimodules are studied. The relationship of quasi-injective semimodules and Hom R(?,U) is got. And the quasi-injective cover to semimodules is introduced, then its properties are obtained