摘要
基于粗糙集理论 ,对一个群的子集关于正规子群的粗糙近似子群作了探讨 ,并研究了一个群的上。
Based on the Rough theory, a rough subgroup with respect to a normal subgroup of a group is discussed, and some properties of the lower and the upper approximations in a group are studied.
出处
《陕西工学院学报》
2002年第2期81-83,共3页
Journal of Shaanxi Institute of Technology
