Esmaeil Ranjbar-Yanehsari - Department of Mathematics, Gorgan Branch, Islamic Azad
Mohsen Asghari-Larimi - Department of Mathematics, Golestan University, Gorgan, Iran

In this paper, some properties of union and intersection fuzzy subhypergroups are discussed. Generally, intersection family of fuzzy subhypergroups of a hypergroup is fuzzy subhypergroup, but, union family of fuzzy subhypergroups of a hypergroup is not fuzzy subhypergroup. We give some conditions such that this family is fuzzy subhypergroup

Hyperstructures, Fuzzy sets, Fuzzy subhypergroups