关于半模正合列的研究
The Study on Exact Sequence of Semi-Module

利用同余方式定义了半模正合列,探讨了半模正合列的若干性质,并给出了不同条件下半模正合列的几个等价刻画; 得到了半模正合列中类似于“五引理”和“三引理”的结论.
The notion of the exact sequences of semi-module over semi-rings is introduced by the congruence and some properties of the exact sequences of semi-modules are discussed,and several equivalent characterizations of semi-exact sequences under different conditions are obtained.The conclusion of the "five lemma" and "three lemma" which are similar to those in the semi-modules exact column is obtained