Fuzzy implicative hyper BCK-ideals of hyper BCK-algebras

摘要

We consider the fuzzification of the notion of implicative hyperBCK-ideals, and then investigate several properties.Using the concept of level subsets, we give acharacterization of a fuzzy implicative hyper BCK-ideal. We statea relation between a fuzzy hyper BCK-ideal and a fuzzy implicativehyper BCK-ideal. We establish a condition for a fuzzy hyperBCK-ideal to be a fuzzy implicative hyper BCK-ideal. Finally, weintroduce the notion of hyper homomorphisms of hyperBCK-algebras, and discuss related properties.