摘要
Many discussions can be seen on the level characterization of closure operator in an induced fuzzy topological space, but they have their limitations. Here by using the minimal set, the problem (see Theorem 1 ) is solved. As its applications, we generalize several results in [2] (see Theorems 2-4). Unless otherwise stated, the definitions and notations follow ones in [2], and throughout this letter, L will always denote a general fuzzy lattice, L-fts, L-fuzzy topological space, and M, the set consisting of all of the moleculars of L.
基金
Project supported by the National Natural Science Foundation of China.
