  In this manuscript, we introduce a new concept, which is called fuzzy left
(right) derivations KU- ideals in KU-algebras. We state and prove some theorems
about fundamental properties of it. Moreover, we give the concepts of the image
and the pre-image of fuzzy left (right) derivations KU-ideals under
homomorphism of KU- algebras and investigated some its properties. Further, we
have proved that every the image and the pre-image of fuzzy left (right)
derivations KU-ideals under homomorphism of KU- algebras are fuzzy left (right)
derivations KU-ideals
