This paper investigated α-sets, operations of fuzzy numbers, on interval fuzzy sets and also on fuzzy mappings, and introduced S.Bs.
In this paper I have discussed some basic but very important theories of fuzzy set theory with numerous examples. I have investigated α-sets, operations of fuzzy numbers, on interval fuzzy sets and also on fuzzy mappings. I have introduced S.Bs. class of fuzzy complements with its increasing and decreasing generators .