It introduces the concept of power semigroup, studies the relations between homomorphism and congruence of power semigroup and obtains some perfect results. 摘要給出了冪半群的概念，研究了冪半群的同態(tài)與同余關(guān)系，討論了它們之間的關(guān)系，并得到了一些理想的結果。
The homomorphism relation between a rough algebraic structure on rough approximation space and intuitionistic fuzzy special sets is researched in details. 同時(shí)研究了粗糙近似空間上一類(lèi)粗代數結構與直覺(jué)模糊特殊集的同態(tài)關(guān)系。
