Listar Revista de Matemáticas 9(2) por título

Mostrando ítems 3-9 de 9

    • Generación de métricas en análisis de datos 

      Bolaños Guerrero, Fabricio; Trejos Zelaya, Javier (2009-02-20)
      In this work we introduce primary generators of metrics, that consist of linearcombinations of known metrics. We establish some theoretical properties of these generators,related to the computation of principal components, ...

    • Lemniscatas 3D 

      Ortega, Rafael; Paluszny, Marco (2009-02-20)
      A 3D lemniscate is a surface consisting of all points whose product of distances toa (finite) set of points or foci is constant. We introduce 3D lemniscates in the contextof geometric modelling and consider its deformation, ...

    • Preference structures, choice functions and their logical form 

      Rodríguez Galiano, María Isabel; González Pachón, Jacinto (2009-02-20)
      Binary relations and choice functions are two different tools for describing DMpreferences on a finite set of alternatives. Normal choice functions are the link betweenthese two tools. These choice functions are easily ...

    • Sobre los números de Hal y Lah 

      Piza Volio, Eduardo (2009-02-20)
      In this article we study some properties concerning the Hal (H kn ) and Lah numbers(Lkn ), which are those that arise in the theory of combinatorics in association with the‘upward and downward factorial polynomials’ [x]n ...

    • Some Ornstein-Uhlenbeck potentials for the one-dimensional Schrödinger operator part II: position-dependent drift 

      Cambronero, Santiago (2009-02-20)
      Se considera el operador de Schr¨odinger en el c´?rculo unitario, con un potencial detipo Ornstein – Uhlenbeck, cuyo factor tendencial depende de la posici´on. Se describela distribuci´on del primer valor propio peri´odico, ...

    • The Determinant of Matching Matrix in the Evaluation of Matching Polynomial 

      Wahid, Shanaz A. (2011-04-29)
      A characterization is given for graphs whose matching polynomial is the determinant of their matching matrices. The matching matrix is then modified and its relation with other graph polynomials is examined.

    • un modelo de equilibrio para economías de producción con análisis de actividad 

      Acuña Ortega, Osvaldo (2009-02-20)
      In this paper we study a general equilibrium model for economies with activitiesanalysis production technologies and we prove a global index theorem for regulareconomies.Keywords: Regular economy, economic equilibrium, ...