TY - JOUR T1 - On Hyper Pseudo BCK-algebras TT - JF - IJMSI JO - IJMSI VL - 9 IS - 1 UR - http://ijmsi.ir/article-1-574-en.html Y1 - 2014 SP - 13 EP - 29 KW - Hyper pseudo BCK-algebras KW - Hyper pseudo BCK-ideals KW - Generated hyper pseudo BCK-ideals . N2 - In this paper, we introduce the notion of hyper pseudo B C K - algebras, which is a generalization of pseudo BCK -algebras and hyper BCK -algebras and we investigates some related properties. In follow, we de ne some kinds of hyper pseudo BCK -ideals of a hyper pseudo BCK - algebra and we find the relations among them. Finally, we characterize the hyper pseudo BCK -ideals of type 4 generated by a nonempty subset. M3 10.7508/ijmsi.2014.01.002 ER -