NEMEUR, AMALSupervisor: Milles, Soheyb2023-07-102023-07-102023-06-10http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/40282T wm Abstract In this memoire, we study particular intuitionistic fuzzy subsets on a lattice and provide some examples. More precisely, the intuitionistic fuzzy ideal and the intuitionistic fuzzy filter on a given lattice. Further, we give some characterizations of these notions in terms of the lattice meet and join operations and in terms ofenets . Key words Intuitionistic fuzzy set, Intuitionistic fuzzy ideal, IntuitionisThesis