Burillo López, PedroFuentes González, RamónGonzález, L.2017-02-162017-02-1619981134-5632https://academica-e.unavarra.es/handle/2454/23676The concepts of bounded subset, complete subset and directed subset, which are well known in the context of partially ordered sets (X, ≤), are extended in order to become applicable, with coherence, in fuzzy relational systems (X, R). The properties of these generalized structures are analyzed and operative examples of them are presented.9 p.application/pdfengCreative Commons Reconocimiento-NoComercial-SinObraDerivada 3.0 España (CC BY-NC-ND 3.0 ES)Fuzzy orderFuzzy boundsCompleteness degreeDirection degreeinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess