Gradations of openness and Changβs fuzzy
β
V. Gregori; A. Vidal
π
Article
π
2000
π
Elsevier Science
π
English
β 151 KB
We study some properties of gradations of openness deΓΏned on a set X and prove that each gradation of openness is the supremum (inΓΏmum) of a strictly increasing (decreasing) sequence of gradations of openness which are equivalent to . Also, we characterize those fuzzy topological spaces (X; T) with