INTERVAL-VALUED INTUITIONISTIC FUZZY LINEGRAPH

In this paper,we introduce the conccept of Interval-valued intuitionistic fuzzy line graphs and discuss some of theirproperties. we prove a necessary and su cient condition for aninterval-valued intuitionistic fuzzy graph to be isomorphic to itscorresponling interval-valued intuitionistic fuzzy line graph . wedetemine when an isomorphism between investigate fuzzy graphfollows from an isomorphism of their coressponding investigatefuzzy line graphs.