引入了反模糊半群及反模糊半群补的定义,获得了反模糊半群补的充要条件;在给出保值模糊映射的基础上,证明了反模糊半群和正规反模糊半群的同态不变性.继而,引入了半群的反模糊(左、右、双、内禀)理想的定义,得到了反模糊(左、右、双、内禀)理想的充要条件和反模糊(左、右、双、内禀)理想在保值模糊映射下的同态不变性.
The definition of anti - fuzzy semigroups and anti - fuzzy semigroup 's complement is introduced, and the sufficient and necessary condition of the existence of the anti - fuzzy semigroup's complement is obtained. Based on the definition of value - keeping fuzzy mappings in semigroups, the paper proves invariance of the ho- momorphism of anti - fuzzy semigroups and normal anti - fuzzy semigroups. Furthermore, the definition of anti - fuzzy ( left, right, bilateral or within) ideals is introduced, and the sufficient and necessary condition of the exist- ence of the anti - fuzzy ( left, right, bilateral or within) ideal is achieved. Finally, the paper discusses invariance of the homomorphism of anti - fuzzy ( left, right, bilateral or within) ideal under the condition of the homomorphic mapping.