Revista de Matemáticas 5(1)
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Generalización a Rn de algunos métodos de interpolación conocidos en ecuaciones diferenciales
(2009-02-18)We present the Runge-Kutta methods of several one-step levels in Rn , as well as algorithms in pseudo-code for the implicit and explicit methods. We study the problem of error control in Rn and we give numerical examples ... -
Métodos no estándar en el problema de la parada óptima
(2009-02-18)We analize the optimal-stopping ploblem by the use of non standard analysis techniques. Using the non standard concept of quasi-optimal time, we prove the existence of optimal times for the problems of finite and infinite ... -
Modelos aditivos y multiplicativos en el análisis de matrices multitrazos - multimétodos de cuestionarios de intereses profesionales
(2009-02-18)The psychologist needs the evaluation of the conceptual validity (convergent and discriminant) of psychological constructions, used for describing and explaining the organization of his observations. In this work, we ... -
Scenario development, qualitative causal analysis and system dynamics
(2009-02-18)The aim of this article is to demonstrate that technology assessments can be supported by methods such as scenario modeling and qualitative causal analysis. At Siemens, these techniques are used to develop preliminary ... -
La factorización de una transformada de Fourier en el método de Wiener-Hopf
(2009-02-18)Using the Wiener-Hopf method, we factorize the Fourier Transform of the kernel of a singular integral equation as the product of two functions: one holomorphic in the upper semiplan and the other holomophic in the lower ... -
El "unravelling" para bigráficas diferenciales
(2009-02-18)Here are examined the main properties of the algorithm called ¨unravelling¨ for differential bigraphs. This algorithm was originally developed for differential graded categories and was useful in the proof the celebrated ... -
Sobre la convexidad de la función de presión en el problema de la filtración no lineal
(2009-02-18)We prove the convexity of the pressure function v for the isotropic ideal gaz flow, based on the theorem about the zeros of the solution of the parabolic equation (1)Keywords: fluid mechanics, turbulence, parabolic equation
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