给出F多余子序列的概念.利用同调的方法,得到了F多余子序列与F覆盖的关系,并给出了F多余子序列的等价刻画.%In this paper,the definition of F-superfluous subsequence is given.By using homological methods,the relation between F-superfluous subsequence and F-cover is obtained.Moreover,a characterization of F-superfluous subsequence is given.
展开▼