【摘要】 给出了幺半群S字问题的解,即{a,b,c}*中任意两个字w,z在同一个由{(abc,1)}生成的同余类的充要条件,定义了S的任意元素的分解式,刻画了它的G reen等价关系,验证了其元素的正则性.更多还原

【Abstract】 In this paper,the answer of the words problem for monoid S is given,that is,the sufficient and necessary condition for any two words w,z in {a,b,c}~* to be in the same congruence class generated by {(abc,1)}.Also,the Green’s equivalances of this monoid are characterized by defining a special word decomposition.Finally the regularity of elements is verified.更多还原