El objeto de este trabajo es sistematizar una técnica que intenta atacar el problema de existencia de secciones de funciones continuas o funciones diferenciables, y el problema de triangulación de una variedad topológica. El antecedente directo de esta técnica está en la teoría de homología seccional introducida por Weshu Shih, para el estudio...
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October 3, 2016 (v1)PublicationUploaded on: December 4, 2022
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November 26, 2014 (v1)Publication
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Uploaded on: March 27, 2023 -
January 23, 2023 (v1)Publication
Since applications of expert systems were typical in domains with no well defined models, qualitative methods for modelling and reasoning were soon developed. Most current qualitative reasoning programs derive the qualitative behaviour of a system by simulating a hand-crafted qualitative version of the differential equation that caracterizes...
Uploaded on: March 24, 2023 -
January 23, 2023 (v1)Publication
To each causal diagram, and the structure that it represents, a dynamical system can be associated. From its qualitative análisis, the behaviours associated to the structure can be deduced. This paper introduces a piecewise linear dynamical system associated to a causal diagram. Some interesting results on the qualitative behaviourof the system...
Uploaded on: March 24, 2023 -
October 14, 2022 (v1)Publication
En estas últimas semanas, diversos analistas norteamericanos y europeos están manifestando como la informática no ha implicado un incremento importante de la productividad. Es evidente que algunas de tales manifestaciones están condicionadas p o r la fase de expansión de la crisis en la que estamos insertos. Crisis que, si bien reitera la...
Uploaded on: December 5, 2022