将粗糙集思想引入到线性空间。提出线性空间中子集的上近似和下近似的概念,给出上、下粗线性子空间与上、下粗不变子空间的概念,讨论粗糙集线性空间的有关性质。
In this paper, we introduce rough sets into linear space. First, we put forward the concepts of upper and lower approximations of a subset in a linear space. Then, we give the definitions of upper and lower rough linear subspaces and upper and lower rough A- subspaces of a linear space. At last, we study their properties and give a series of meaningful results.