Bifuzzy left <Emphasis Type="Italic">h</Emphasis>-ideals of hemirings with interval-valued membership function

In this paper we apply the concept of interval-valued bifuzzy sets to hemirings. We introduce the notion of interval-valued bifuzzy left h-ideals of hemirings and investigate some of their properties. Using interval-valued bifuzzy left h-ideals, characterizations of Artinian and Noetherian hemirings are established.