• Deformaciones isométricas infinitesimales de superficies multidimensionales ensambladas 

      Markov, Pavel; Trejos, Olman (2012-04-26)
      The article introduces the concept of multidimensional pasted surfaces and considers the case of different dimensions in the surfaces to be pasted. Infinitesimal deformations of such surfaces are also considered. In a ...
    • Detecting constraint redundancy in 0-1 linear programming problems 

      Muñoz, Susana (2009-02-19)
      In this paper we present a procedure for obtaining upper bounds on a linear function by means of certain families of packings, coverings and special ordered sets. We also present a new method for detecting redundant ...
    • Experiencias con un nuevo índice de falta de ajuste en Tablas de Contingencia 

      González Debén, Adalberto; Méndez Ramírez, Ignacio (2012-04-26)
      Rudas, Clogg and Lindsay, en 1994, proposed a new index of lack of fit for contingency table analysis. For a contingency table P with N cells, and a model H, the new index is defined as the smallest \pi that satisfies the ...
    • Fórmulas aproximadas del tipo Lévy-Khintchine 

      Lobo Segura, Jaime (2009-02-19)
      The problem of approximation of the characteristic functions defined by a PII in near intervals is studied. We establish some general properties of these functions and of the associated complex matingales, which, with the ...
    • Isomorfismo de Conjuntos de Relaciones 

      Bulat, Mijail (2012-04-26)
      It is recommended to use a solving method for relations sets in order to solve the isomorphism problem. This method allows to solve the same problem for big size graphs, homogeneous graphs, graph systems, k-signs logic ...
    • On the Distribution of non-attacking Bishops on a Chessboard C 

      Ansari Wahid, Shanaz (2012-04-26)
      It is shown how the placement of non-attacking bishops on a chessboard C is related to the matching polynomial of a bipartite graph. Reduction algorithms for finding the bishop polynomial of C are given. We interpret ...