The concepts of ()-fuzzy bi-hyperideals and ()-fuzzy quasi-hyperideals of a semihyperring are introduced, and some related properties of such ()-fuzzy hyperideals are investigated. In particular, the notions of hyperregular semihyperrings and left duo semihyperrings are given, and their characterizations in terms of hyperideals and ()-fuzzy hyperideals are studied.
"Characterizations of Semihyperrings by Their ()-Fuzzy Hyperideals." J. Appl. Math. 2013 1 - 13, 2013. https://doi.org/10.1155/2013/348203