Now showing items 1-7 of 7

    • An axiomatic approach to finite means 

      Campión Arrastia, María Jesús Upna Orcid; Candeal, Juan Carlos; García Catalán, Olga Raquel Upna; Giarlotta, Alfio; Induráin Eraso, Esteban Upna Orcid (Elsevier, 2018)   Artículo / Artikulua  OpenAccess
      In this paper we analyze the notion of a finite mean from an axiomatic point of view. We discuss several axiomatic alternatives, with the aim of establishing a universal definition reconciling all of them and exploring ...
    • Comparison meaningful operators and ordinal invariant preferences 

      Candeal, Juan Carlos; Induráin Eraso, Esteban Upna Orcid (Elsevier, 2015)   Artículo / Artikulua  OpenAccess
      The existence of a continuous and order-preserving real-valued function, for the class of continuous and ordinal invariant total preorders, defined on the Banach space of all bounded real-valued functions, which are in ...
    • New trends on the numerical representability of semiordered structures 

      Abrísqueta Usaola, Francisco Javier Upna; Campión Arrastia, María Jesús Upna Orcid; García Catalán, Olga Raquel Upna; Miguel Velasco, Juan Ramón de Upna Orcid; Estevan Muguerza, Asier Upna Orcid; Induráin Eraso, Esteban Upna Orcid; Zudaire Sarobe, Margarita Upna; Agud, L.; Candeal, Juan Carlos; Díaz, S.; Martinetti, D.; Montes Rodríguez, Susana; Gutiérrez García, J. (EUSFLAT, 2012)   Artículo / Artikulua  OpenAccess
      We introduce a survey, including the historical background, on di erent techniques that have recently been issued in the search for a characterization of the representability of semiordered structures, in the sense of ...
    • On the structure of acyclic binary relations 

      Rodríguez Alcantud, José Carlos; Campión Arrastia, María Jesús Upna Orcid; Candeal, Juan Carlos; García Catalán, Olga Raquel Upna; Induráin Eraso, Esteban Upna Orcid (Springer, 2018)   Artículo / Artikulua  OpenAccess
      We investigate the structure of acyclic binary relations from different points of view. On the one hand, given a nonempty set we study real-valued bivariate maps that satisfy suitable functional equations, in a way that ...
    • Pointwise aggregation of maps: its structural functional equation and some applications to social choice theory 

      Miguel Turullols, Laura de Upna Orcid; Campión Arrastia, María Jesús Upna Orcid; Candeal, Juan Carlos; Induráin Eraso, Esteban Upna Orcid; Paternain Dallo, Daniel Upna Orcid (Elsevier, 2017)   Artículo / Artikulua  OpenAccess
      We study a structural functional equation that is directly related to the pointwise aggregation of a finite number of maps from a given nonempty set into another. First we establish links between pointwise aggregation and ...
    • Representaciones numéricas de semigrupos totalmente ordenados 

      Miguel Velasco, Juan Ramón de Upna Orcid (Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa, 1995)   Tesis doctoral / Doktoretza tesia  OpenAccess
      En esta memoria se estudia la posibilidad de obtener representaciones numéricas de semigrupos totalmente ordenados. En este caso, el objetivo es respetar tanto la estructura de orden, como la algebraica adicional. Denominaremos ...
    • Semicontinuous planar total preorders on non-separable metric spaces 

      Campión Arrastia, María Jesús Upna Orcid; Candeal, Juan Carlos; Induráin Eraso, Esteban Upna Orcid (The Korean Mathematical Society, 2009)   Artículo / Artikulua  OpenAccess
      We prove that every non-separable connected metric space can be endowed with a total preorder that is order-isomorphic to a nonrepresentable subset of the lexicographic plane and semicontinuous with respect to the metric topology.