Abstract
In this paper, we define interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-subhemirings, interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-ideals, interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-interior ideals, interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-bi-ideals, interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-quasi-ideals, and k-semisimple hemirings. We also characterize k-regular, k-intra-regular, and k-semisimple hemirings by the properties of these interval-valued (is an element of(gamma), is an element of(gamma) boolean OR q(delta))-fuzzy k-ideals.