Erratum to “Study on quasi-Γ-hyperideals inΓ-semihypergroups”

We wrote this note to show that the definition of Γ-hypersemigroups in [2] should be corrected, and that it is not enough to replace the hyperoperation ◦ of the hypersemigroup by Γ to pass from a hypersemigroup to a Γ-hypersemigroup. Care should be taken about the definitions of m, n -quasi-Γ-hyperideal, the m-left Γ-hyperideal and the n-right Γ-hyperideal as well.