A CONSTRUCTION OF HYPERSEMIGROUPS FROM A FAMILY OF PREORDERED SEMIGROUPS
Morteza Jafarpour, Seyed Shahin Mousavi · Scientiae mathematicae Japonicae · 2009
In this article the notion of weak mutual associativity (w.m.a.) and the necessary and sufficient condition for a (L,Γ)-associated hypersemigroup (H, ∗) derived from some family of -preordered semigroups to be a hypergroup, are given.