Listar Revista de Matemática: Teoría y Aplicaciones por título
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Algebraic jet spaces and Zilber’s dichotomy in DCFA
(2010-04-16)This is the first of two papers devoted to the proof of Zilber’s dichotomy for the case of difference-differential fields of characteristic zero. In this paper we use the techniques exposed in [9] to prove a weaker version ... -
Algoritmo de búsqueda tabú para una variante del problema de coloración
(2013-08-29)El problema de coloración robusta generalizado (PCRG) resuelve problemas de horarios que consideran restricciones especiales. Al ser una generalización del problema de coloración robusta, que es a su vez una generalización ... -
Algoritmo de Karmarkar y matrices ralas
(2009-02-18)This is the second of a series of two articles en which we study the Karmarkar’s method. In this article we are going to show how can we use sparse matrix theory to get an efficient implementation of the Karmarkar’s process ... -
Algoritmo e implementación del análisis factorial de correspondencias
(2009-02-18)In this article, it is presented an algorithm in pseudo-code for the Factor Analysis of Correspondence. Some comments on the implementationn on C++ are also developed. Finally, the method is illustrated by an example. -
Algoritmos de punto fijo usando subdivisiones simpliciales
(2009-02-18)In this paper we study an algorithm for approximating fixed points using simplicial subdivisions of the simplex. Furthermore, it is compared with algorithms of primitive sets. -
Algoritmos de reducción para bigráficas diferenciales
(2012-03-29)Se estudian tres algoritmos de reducción para bigráficas diferenciales: regularización, eliminación de objetos y reducción de una flecha. En cada caso se determina la bigráfica resultante y la relación entre las respectivas ... -
Algoritmos evolutivos en la solución de problemas de estimación de parámetros
(2009-02-20)The global problem to determine the values of some parameters in dynamicalmodels knowing experimental results is frequently known as Parameters EstimationProblem and it appears in many areas of sciences. So is clear that ... -
Algoritmos Numéricos para el Problema de Restauración de Imágenes usando el Método de las Proyecciones Alternantes
(2011-04-29)The projection algorithms have evolved from the alternating projection method proposed by J. von Neumann in 1933, who treated the problem of finding the projection of a given point in a Hilbert space onto the intersection ... -
Algoritmos para la clasificación piramidal simbólica
(2009-02-19)En este artículo se define el concepto de pirámide simbólica, además se presentan dos algoritmos para generar este tipo d pirámide a partir de una matriz de datos simbólicos. El primer algoritmo (CAPS) encuentra un "orden ... -
Algunas consideraciones sobre el modelo lineal multivariado
(2009-02-18)We consider the general linear model with the classical hypothesis. In particular we consider the variance analysis in two factors and we give explicitly the forms of the associated matrixes as well as the statistics of ... -
Algunas soluciones exactas para la ecuación unidimensional de fokker-planck usando simetrías de lie
(2015-01-01)La ecuación de Fokker Planck aparece en el estudio de fenómenos de difusión, procesos estocásticos y mecánica clásica y cuantica. Un caso particular de esta ecuación, ut − uxx − xux − u = 0, es analizada empleando el método ... -
Algunos aspectos de morfismos K finitos en topos elementales
(2009-02-18)In this paper we study conditions under which morphims f que va de X a Y, are K-finite in a topos E. We construct some counterexamples. -
Algunos aspectos teóricos de las funciones casi periódicas n-dimensionales
(2009-02-19)We five a definition of Almost Periodic Functions on Ñ N. Following that definition we show some topological properties for this functions. At the end of this paper we proof some algebraic properties by using the structure ... -
Algunos potenciales aleatorios del tipo Ornstein-Uhlenbeck para el operador de Schrödinger
(2009-02-18)Se considera el operador de Schrödinger en el círculo de perímetro 1, con ciertos potenciales aleatorios del tipo Ornstein-Uhlenbeck, con deslizamiento dependiente del tiempo. Se describe la distribución del primer valor ... -
An adaptive wavelet-galerkin method for parabolic partial differentia equations
(2015-01-01)In this paper an Adaptive Wavelet-Galerkin method for the solution of parabolic partial differential equations modeling physical problems with different spatial and temporal scales is developed. A semi-implicit time ... -
An Alternative to Chaid Segmentation Algorithm Based on Entropy.
(2010-07-02)The CHAID (Chi-Squared Automatic Interaction Detection) treebased segmentation technique has been found to be an effective approach for obtaining meaningful segments that are predictive of a K-category (nominal or ordinal) ... -
An approach to ladder operators for the two-dimensional harmonic oscillator
(2009-02-25)We show that elementary properties of associated Laguerre polynomials generatethe ladder operators for the harmonic oscillator radial wave function in two dimensions.Keywords: Harmonic oscillator, ladder operators, Laguerre ... -
An enumerative procedure for identifying maximal covers
(2009-02-20)In this paper we present an enumerative procedure for identifying all maximalcovers from the set of covers implied by a 0-1 knapsack constraint. The inequalitiesinduced by these maximal covers are not dominated by the ... -
An Introduction to Symbolic data Analysis and its Application to the Sodas Project
(2012-04-12)The data descriptions of the units are called "symbolic" when they are more complex than the standard ones due to the fact that they contain internal variation and are structured. Symbolic data happen from many sources, ... -
Analyis on the vascular epiphytes of tree ferns in a montane rain forest in Costa Rica
(2009-02-18)The relationships between epiphytes and host specifity are known. We investigated the relation between specific epiphytes and tree fern trunks. Only some epiphytes are frequent or very frequent on tree ferns. Most of the ...