Listar Revista de Matemáticas 6(2) por título
Mostrando ítems 5-7 de 7
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Ultraproductos de f-anillos proyectables
(2009-02-18)In [7], Keimel representes the projectable f-rings as continuous sections of Hausdorff sheaves of totally ordered rings. Here, we give a result about the representation of ultraporducts of projectable f-rings in terms of ... -
Un enfoque diferente de las técnicas de clustering para el estudio de epidemias
(2009-02-18)Classification of an outbreak with the category of epidemics requires that some epidemiological and statistical parameters, which have to be studied simultaneously, are satisfied; mathematical theory helps epidemiologists ... -
Un frailty aditivo en modelos de supervivencia bivariante
(2009-02-18)Bivariate survival models based on the presence of an unobseved random covariate, grailty, tend to assume a proportional hazard hypothesis. A bivariate survival model is constructed. It is based on frailty model that acts ...