hossein shojaei - affiliation:school of mathematics, statistics and computer science, college of sciences, university of thehran
reza ameri - affiliation:school of mathematics, statistics and computer science, college of sciences, university of thehran

Let(s,.) be a semihypergroup with a zero element, say 0. in this paper we study some properties of such semihypergroups depended on zero divisor elements, nilpotent elements, etc. also we will proceed to consider some properties related to a zero element in a demihypergroup S and introduce the property y in particular we prove that the property y immplies the property

semihypergroup, FZ-semihypergroup, FN-semihypergroup, property