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Ajuste de un modelo VAR como predictor de los campos de anomalías de precipitación en centroamérica
Ajuste de un modelo VAR como predictor de los campos de anomalías de precipitación en centroamérica
(2012-04-26)
Cluster analysis was used to identify common patterns of 15 precipitation points of the region, using their anomaly time series as grouping variables. Five clusters where identified through this process. A Vector Auto ...
Deformaciones isométricas infinitesimales de superficies multidimensionales ensambladas
Deformaciones isométricas infinitesimales de superficies multidimensionales ensambladas
(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 ...
Isomorfismo de Conjuntos de Relaciones
Isomorfismo de Conjuntos de Relaciones
(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 ...
Detecting constraint redundancy in 0-1 linear programming problems
Detecting constraint redundancy in 0-1 linear programming problems
(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 ...
On the Distribution of non-attacking Bishops on a Chessboard C
On the Distribution of non-attacking Bishops on a Chessboard C
(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 ...
Experiencias con un nuevo índice de falta de ajuste en Tablas de Contingencia
Experiencias con un nuevo índice de falta de ajuste en Tablas de Contingencia
(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
Fórmulas aproximadas del tipo Levy-Khintchine
(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 ...