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  • Intuitionistic fuzzy relations: (Part I) 

    Burillo López, Pedro; Bustince Sola, Humberto Nicanor (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1995)
    Article
    Accés obert
    This paper introduces the concept of intuitionistic fuzzy relation. We also study the choice of t-norms and t-conorms which must be done in order that the composition of intuitionistic fuzzy relations fulfils the largest ...
  • On some constructions of new triangular norms 

    Mesiar, Radko (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1995)
    Article
    Accés obert
    We discuss the properties of two types of construction of a new t-norm from a given t-norm proposed recently by B. Demant, namely the dilatation and the contraction. In general, the dilatation of a t-norm is an ordinal sum ...
  • Synthesis of membership functions to determine a radius of influence 

    Torra Ferré, Vicenç (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1995)
    Article
    Accés obert
    In this work we study the synthesis of membership functions when they have been calculated from a set of observations according to the definition of (Zhang, 1993). The results obtained have been used to determine the radius ...
  • On inner product spaces-II 

    Kannappan, Palaniappan (Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1995)
    Article
    Accés obert
    Among normal linear spaces, the inner product spaces (i.p.s.) are particularly interesting. Many characterizations of i.p.s. among linear spaces are known using various functional equations. Three functional equations ...