搜索智能精选 题目6. 设 G 是群,e 是幺元,a,b,c∈G,则下面关于群的性质描述错误的是( )。A. 若 ab=b,则必有 a=e B. 若 b≠c,有可能 ab=acC. G 有唯一的幂等元 D.aG=Ga 答案答:B.
幂幺元;幂单元2) unipotent element 幂幺元3) idempotent element monoids 幂等元幺半群 1. Some equivalent conditions out of condition (E′) were given and some equalizer-flat category characters of idempotent element monoids were discussed by using condition(E)and equalizer-flat. 给出了条件(E...