%0 Journal Article %A Ghazavi, S. H. %A Anvariyeh, S. M. %A Mirvakili, S. %T $EL^2$–hyperstructures Derived from (Partially) Quasi Ordered Hyperstructures %J Iranian Journal of Mathematical Sciences and Informatics %V 10 %N 2 %U http://ijmsi.ir/article-1-612-en.html %R 10.7508/ijmsi.2015.02.010 %D 2015 %K Ends lemma, El–hyperstructure, (semi)Hypergroup, Partial ordering, Quasi ordering., %X In this paper, we introduce a new class of (semi)hypergroup from a given (partially) quasi-ordered (semi)hypergroup as a generalization of {it "$El$--hyperstructures"}. Then, we study some basic properties and important elements belong to this class. %> http://ijmsi.ir/article-1-612-en.pdf %P 99-114 %& 99 %! %9 Research paper %L A-10-952-1 %+ Yazd university %G eng %@ 1735-4463 %[ 2015